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[34]                                                                                                                                                                                                                                              AJDHS.COM 

 

 

Available online at ajdhs.com 

Asian Journal of Dental and Health Sciences 
Open Access to Dental and Medical Research 

Copyright  © 2025 The  Author(s): This is an open-access article distributed under the terms of the CC BY-NC 4.0 
which permits unrestricted use, distribution, and reproduction in any medium for non-commercial use provided the 

original author and source are credited  

 

 

Differential Diagnosis of Anemia in Pregnancy Using Mentzer Index: A Narrative 
Review 

Emmanuel Ifeanyi Obeagu *  

Department of Biomedical and Laboratory Science, Africa University, Zimbabwe 

Article Info: 
_____________________________________________ 
Article History: 

Received   10 Nov 2024     
Reviewed  19 Dec 2024 
Accepted   16 Jan 2025 
Published 15 March 2025 

_____________________________________________ 
Cite this article as:  

Obeagu EI, Differential Diagnosis of Anemia 
in Pregnancy Using Mentzer Index: A 
Narrative Review, Asian Journal of Dental and 
Health Sciences. 2025; 5(1):34-39                                                                     

DOI: http://dx.doi.org/10.22270/ajdhs.v5i1.117          

Abstract 
_________________________________________________________________________________________________________________ 

Anemia in pregnancy remains a significant global health concern, contributing to adverse maternal 
and fetal outcomes. Among its most common etiologies are iron-deficiency anemia (IDA) and 
thalassemia traits, both requiring distinct management strategies. The Mentzer Index, calculated as 
the ratio of Mean Corpuscular Volume (MCV) to Red Blood Cell (RBC) count, has emerged as a 
practical, cost-effective tool for differentiating between these conditions. This simple calculation 
leverages routine complete blood count (CBC) parameters, offering a quick and accessible approach 
to initial anemia diagnosis in prenatal care. This review explores the utility of the Mentzer Index in 
diagnosing anemia in pregnancy, focusing on its advantages and limitations. By distinguishing IDA 
from thalassemia traits, the index supports tailored interventions, minimizing complications such as 
iron overload or untreated anemia. Its integration into routine antenatal care is particularly 
beneficial in resource-limited settings, where advanced diagnostic modalities are often unavailable. 

Keywords: Mentzer Index, anemia in pregnancy, iron-deficiency anemia, thalassemia traits, 
differential diagnosis 

*Address for Correspondence:   

Emmanuel Ifeanyi Obeagu, Department of Biomedical and Laboratory Science, Africa University, Zimbabwe 

 

Introduction 

Anemia is a significant public health issue affecting 
approximately 40% of pregnant women worldwide. The 
condition is defined as a reduction in hemoglobin 
concentration below the threshold needed to meet the 
body’s physiological requirements, leading to reduced 
oxygen delivery to tissues. Pregnant women are 
particularly vulnerable due to increased iron demands 
for maternal and fetal development, compounded by 
potential underlying genetic factors. Anemia during 
pregnancy is associated with serious maternal and fetal 
complications, including preterm delivery, low birth 
weight, and increased risk of maternal mortality. 
Identifying the underlying cause of anemia is crucial for 
its effective management and prevention of associated 
adverse outcomes.1-2 The most common causes of 
anemia in pregnancy are iron-deficiency anemia (IDA) 
and thalassemia traits. IDA, characterized by low iron 
stores and inadequate hemoglobin production, is 
primarily driven by poor dietary intake, malabsorption, 
or increased iron demands during pregnancy. 
Thalassemia traits, on the other hand, result from 
genetic mutations affecting hemoglobin synthesis, 
leading to microcytosis and varying degrees of anemia. 
These conditions require different management 
strategies, emphasizing the need for accurate 
differential diagnosis to avoid inappropriate treatments 
that may worsen patient outcomes, such as unnecessary 

iron supplementation in thalassemia.3 Differentiating 
IDA from thalassemia traits can be challenging due to 
overlapping clinical and laboratory features, such as 
microcytosis and hypochromia. Misdiagnosis can lead to 
ineffective or harmful treatment strategies. For instance, 
administering iron supplements to a patient with 
thalassemia traits may result in iron overload and 
exacerbate complications. Similarly, overlooking iron-
deficiency anemia in favor of thalassemia could lead to 
untreated anemia and its complications. Therefore, 
accurate and cost-effective diagnostic tools are 
essential, particularly in resource-limited settings 
where advanced testing methods like hemoglobin 
electrophoresis or genetic studies are not readily 
available.4 

The Mentzer Index (MI), calculated as the ratio of Mean 
Corpuscular Volume (MCV) to Red Blood Cell (RBC) 
count, is a practical and widely used screening tool for 
distinguishing between IDA and thalassemia traits. 
Values greater than 13 typically suggest IDA, while 
values below 13 are indicative of thalassemia traits. This 
index leverages parameters obtained from a routine 
complete blood count (CBC), making it a low-cost and 
accessible method for initial anemia assessment. Its 
simplicity and applicability in diverse clinical settings 
have made it a valuable addition to prenatal care.5 In 
pregnant populations, the Mentzer Index plays a critical 
role in guiding anemia management, especially during 

                     Open Access                                                                                                                                                                                                                Review Article                                                                           

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http://dx.doi.org/10.22270/ajdhs.v5i1.117
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Emmanuel Ifeanyi Obeagu                                                                                                      Asian Journal of Dental and Health Sciences. 2025; 5(1):34-39 

[35]                                                                                                                                                                                                                                              AJDHS.COM 

routine antenatal visits. Early differentiation of anemia 
types enables timely and targeted interventions, 
reducing the risk of complications for both the mother 
and the fetus. Moreover, the Mentzer Index's reliance on 
basic CBC parameters aligns well with the resource 
constraints of many low- and middle-income countries, 
where advanced diagnostics may be unavailable. 
Despite these advantages, its application in pregnancy is 
not without limitations, as physiological changes during 
gestation can influence hematological parameters and 
affect the reliability of the index.6-7This review aims to 
examine the role of the Mentzer Index in the differential 
diagnosis of anemia in pregnancy, emphasizing its 
clinical utility, advantages, and limitations.  

Etiologies of Anemia in Pregnancy 

Anemia in pregnancy can arise from several underlying 
causes, with iron-deficiency anemia (IDA) and 
thalassemia traits being the most common. Identifying 
the specific etiology of anemia is crucial, as each type 
requires a distinct management approach. The primary 
causes of anemia during pregnancy include nutritional 
deficiencies, genetic factors, and other medical 
conditions that can affect the body’s ability to produce 
or maintain red blood cells.8 

1. Iron-Deficiency Anemia (IDA) 

Iron-deficiency anemia is the most prevalent form of 
anemia during pregnancy. It occurs when the body lacks 
sufficient iron to produce hemoglobin, a key protein in 
red blood cells responsible for oxygen transport. 
Pregnancy increases iron requirements due to the 
growing fetus and placenta, increased blood volume, 
and the need to prepare for childbirth. If dietary intake 
is inadequate or absorption is impaired, it can lead to 
depleted iron stores, resulting in IDA. The hallmark of 
IDA is microcytic, hypochromic anemia, which can be 
detected through a routine blood test showing low 
hemoglobin levels, decreased mean corpuscular volume 
(MCV), and low ferritin levels.9 

2. Thalassemia Traits 

Thalassemia, a genetic disorder affecting hemoglobin 
production, is another significant cause of anemia in 
pregnancy. In thalassemia, the body produces an 
abnormal form of hemoglobin due to mutations in the 
alpha or beta globin genes. Thalassemia traits are 
inherited and often go undiagnosed until an individual 
experiences symptoms, such as anemia during 
pregnancy. This condition typically results in mild 
microcytic anemia with normal or slightly elevated RBC 
count. However, it is distinguished from IDA by the 
absence of iron deficiency. Thalassemia traits are 
especially prevalent in populations of Mediterranean, 
Middle Eastern, African, and Southeast Asian descent.10 

3. Anemia of Chronic Disease (ACD) 

Anemia of chronic disease (ACD) is another potential 
cause of anemia in pregnancy, especially in women with 
pre-existing medical conditions such as chronic 
infections, inflammatory disorders, or kidney disease. 
This type of anemia is typically normocytic and 
normochromic, characterized by a normal MCV and 

MCH, but a reduced hemoglobin level due to the body’s 
response to chronic illness. During pregnancy, the 
increased inflammatory state and physiological changes 
can exacerbate ACD, making it an important 
consideration in the differential diagnosis of anemia.11 

4. Folate and Vitamin B12 Deficiency Anemia 

Deficiencies in folate or vitamin B12 are another cause 
of anemia during pregnancy. Folate is essential for DNA 
synthesis and red blood cell production, and a 
deficiency can lead to megaloblastic anemia, 
characterized by large, immature red blood cells. 
Pregnant women are at higher risk of folate deficiency 
due to increased demand for folate during fetal 
development. Similarly, vitamin B12 deficiency can lead 
to similar megaloblastic anemia and may also cause 
neurological complications if left untreated. These 
deficiencies often result in symptoms of fatigue, pallor, 
and weakness, and can be confirmed by blood tests 
showing elevated mean corpuscular volume (MCV) and 
abnormal levels of folate or vitamin B12.12 

5. Sickle Cell Disease 

Sickle cell disease is a genetic disorder that affects the 
shape of red blood cells, making them rigid and sickle-
shaped, leading to blocked blood flow, pain, and 
hemolysis. Pregnant women with sickle cell disease may 
experience anemia due to the rapid breakdown of these 
abnormally shaped cells. This form of anemia is 
typically normocytic but can be complicated by episodes 
of hemolysis and vaso-occlusive crises. Management of 
anemia in sickle cell disease requires careful 
monitoring, as iron supplementation is usually not 
indicated due to the risk of iron overload.13 

6. Hemolytic Anemia 

Hemolytic anemia can occur in pregnancy due to 
autoimmune diseases, infections, or certain medications 
that trigger the premature destruction of red blood 
cells. Conditions like autoimmune hemolytic anemia or 
malaria can lead to a significant reduction in red blood 
cell count, presenting as anemia. This condition can be 
diagnosed based on peripheral blood smear findings, 
showing fragmented red blood cells, and laboratory 
tests demonstrating elevated reticulocyte count, which 
indicates increased red blood cell production in 
response to hemolysis.14 

7. Acute Blood Loss 

Acute blood loss, often due to trauma, hemorrhage 
during delivery, or placental complications like 
placental abruption, is another cause of anemia in 
pregnancy. This form of anemia is typically normocytic 
and can cause a rapid decline in hemoglobin levels. 
Immediate medical intervention is required to stabilize 
the mother and fetus, and blood transfusion may be 
necessary depending on the severity of the blood loss.15 

8. Pregnancy-Related Hemodilution 

During pregnancy, the body undergoes hemodilution 
due to the expansion of plasma volume, leading to a 
relative decrease in hemoglobin concentration. This 
dilution effect can sometimes mask underlying anemia, 



Emmanuel Ifeanyi Obeagu                                                                                                      Asian Journal of Dental and Health Sciences. 2025; 5(1):34-39 

[36]                                                                                                                                                                                                                                              AJDHS.COM 

particularly in the second and third trimesters. 
However, the physiological increase in blood volume is 
typically not sufficient to cause a significant drop in 
hemoglobin levels, and this condition resolves after 
delivery. It is important to differentiate hemodilution 
from actual anemia, as treatment strategies differ.16 

The Role of Mentzer Index in Differential 
Diagnosis 

Differentiating between the various causes of anemia in 
pregnancy is crucial for ensuring appropriate treatment 
and minimizing potential complications for both the 
mother and the fetus. Among the most common forms of 
anemia during pregnancy are iron-deficiency anemia 
(IDA) and thalassemia traits, both of which can present 
with similar clinical symptoms but require distinct 
management strategies. The Mentzer Index (MI) has 
emerged as a practical, cost-effective tool to assist 
clinicians in distinguishing between these two 
conditions, thereby enabling more accurate diagnoses 
and guiding subsequent treatment choices.17 Iron-
deficiency anemia and thalassemia traits share many 
clinical features, including fatigue, pallor, and mild 
microcytic anemia, making differential diagnosis 
challenging without appropriate diagnostic tools. The 
Mentzer Index helps to address this diagnostic challenge 
by using readily available CBC parameters. In IDA, iron 
deficiency impairs the ability of the body to produce 
sufficient hemoglobin, leading to reduced hemoglobin 
levels and smaller red blood cells (microcytosis). In 
thalassemia traits, however, the body compensates for 
defective hemoglobin production by increasing RBC 
count, although these cells remain small (microcytic). 
Thus, while both conditions exhibit microcytic anemia, 
the key difference is that IDA typically has a higher 
MCV-to-RBC ratio, whereas thalassemia traits feature a 
lower ratio.18 

The use of the Mentzer Index in pregnancy is 
particularly valuable, as pregnant women are at 
increased risk for both IDA and thalassemia traits. 
Thalassemia traits, common in individuals of 
Mediterranean, African, and Southeast Asian descent, 
may go undiagnosed until the woman presents with 
anemia during pregnancy. Differentiating between these 
conditions is essential because iron supplementation, a 
cornerstone of IDA management, can lead to iron 
overload and exacerbate complications in individuals 
with thalassemia traits. In such cases, early and accurate 
identification through the Mentzer Index can help 
prevent unnecessary iron supplementation, ensuring 
that patients receive the appropriate treatment for their 
condition.19 In many resource-limited settings, access to 
advanced diagnostic techniques, such as hemoglobin 
electrophoresis or genetic testing, is limited or 
unavailable. In these circumstances, the Mentzer Index 
provides a cost-effective and accessible tool for 
clinicians to differentiate between IDA and thalassemia 
traits. By using only routine CBC parameters, which are 
commonly available in most healthcare facilities, the 
Mentzer Index can help guide initial diagnosis and 
treatment decisions. This is particularly important in 
low-income countries or areas with high prevalence 

rates of thalassemia, where healthcare resources may 
be stretched thin, and timely access to specialized tests 
may be difficult.20 

The simplicity of the Mentzer Index also makes it an 
attractive option for integration into routine prenatal 
care. During regular antenatal visits, pregnant women 
are routinely screened for anemia using CBC, and the 
Mentzer Index can be calculated easily from the results 
of these tests. In settings where time and resources are 
constrained, this simple calculation can serve as an 
invaluable first-line tool for the differential diagnosis of 
anemia, allowing clinicians to prioritize further 
investigation or intervention where necessary.21 Given 
the limitations of the Mentzer Index, it is crucial to use it 
in conjunction with other diagnostic tools for a more 
comprehensive assessment of anemia in pregnancy. 
Additional tests, such as measuring serum ferritin, 
transferrin saturation, or conducting hemoglobin 
electrophoresis, can help confirm the diagnosis of IDA 
or thalassemia traits. In cases where the Mentzer Index 
provides borderline or unclear results, these 
supplementary tests can clarify the diagnosis, ensuring 
that appropriate treatment is provided. For example, 
serum ferritin is a key marker of iron stores and can 
help confirm whether a patient’s anemia is due to iron 
deficiency, while hemoglobin electrophoresis can 
definitively identify thalassemia or other 
hemoglobinopathies.22 

Limitations and Challenges 

Despite its utility in the differential diagnosis of anemia, 
particularly in distinguishing between iron-deficiency 
anemia (IDA) and thalassemia traits, the Mentzer Index 
(MI) has several limitations and challenges that must be 
considered when applying it in clinical practice, 
particularly in pregnancy. 

1. Physiological Changes During Pregnancy 

Pregnancy introduces physiological changes that can 
impact the hematological parameters used in the 
Mentzer Index calculation. For example, the increased 
plasma volume and hemodilution during pregnancy can 
lead to a lower hemoglobin concentration and RBC 
count, which may skew the results of the MI. This 
hemodilution effect can make it challenging to 
differentiate between iron-deficiency anemia and 
thalassemia traits, as both conditions may present with 
low RBC count and microcytic anemia. The standard MI 
values used to differentiate these conditions may not be 
applicable to pregnant women due to these 
physiological changes, which may necessitate further 
testing, such as ferritin levels or hemoglobin 
electrophoresis, to confirm the diagnosis.23 

2. Lack of Specificity in Mixed Anemia 

The Mentzer Index is primarily effective in 
distinguishing between IDA and thalassemia traits, but 
it may not be as reliable when mixed forms of anemia 
are present. For instance, a patient may have both iron-
deficiency anemia and thalassemia traits, which could 
lead to overlapping characteristics and result in 
ambiguous MI values. In such cases, the MI might not 



Emmanuel Ifeanyi Obeagu                                                                                                      Asian Journal of Dental and Health Sciences. 2025; 5(1):34-39 

[37]                                                                                                                                                                                                                                              AJDHS.COM 

provide a definitive diagnosis, leading to potential 
misinterpretation. Additionally, other causes of anemia, 
such as anemia of chronic disease (ACD) or folate and 
vitamin B12 deficiencies, can present with similar MCV 
and RBC count values, complicating the use of the 
Mentzer Index as a sole diagnostic tool.24 

3. Dependence on Accurate Laboratory Values 

The accuracy of the Mentzer Index relies heavily on the 
quality of the underlying laboratory tests, specifically 
the measurement of Mean Corpuscular Volume (MCV) 
and Red Blood Cell (RBC) count. Errors in these tests, 
due to machine calibration, human error, or sample 
quality, can result in misleading MI values. Inadequate 
blood samples, variations in laboratory techniques, or 
the presence of certain factors, such as dehydration, can 
lead to inaccuracies in MCV or RBC count, thereby 
affecting the reliability of the MI in diagnosing anemia. 
This dependency on accurate laboratory values 
underscores the need for careful testing and 
interpretation, especially in the context of pregnancy, 
where numerous factors can influence blood test 
results.25 

4. Inability to Diagnose Other Hematological 
Disorders 

While the Mentzer Index is helpful in distinguishing 
between IDA and thalassemia traits, it does not provide 
information about other types of anemia or underlying 
hematological disorders. Conditions such as sickle cell 
disease, autoimmune hemolytic anemia, or 
megaloblastic anemia due to folate or vitamin B12 
deficiency require additional diagnostic testing, such as 
hemoglobin electrophoresis, reticulocyte count, and 
vitamin assays, to confirm the diagnosis. The MI’s 
limited scope may lead to an incomplete diagnostic 
picture if relied upon as the sole method of evaluation. 
In cases of complex or atypical anemia, further 
investigation is necessary to identify the root cause.26 

5. Influence of Hemoglobinopathies and Variants 

In populations with a high prevalence of 
hemoglobinopathies, such as sickle cell disease, 
hemoglobin C, or other genetic variants, the Mentzer 
Index may be less reliable. Hemoglobinopathies can 
alter the RBC count, MCV, and other hematological 
parameters in ways that are not captured by the MI. For 
example, individuals with sickle cell disease or 
hemoglobin C disease may exhibit microcytic or 
normocytic anemia, which could lead to 
misinterpretation of the MI and confusion with IDA or 
thalassemia. In these cases, additional diagnostic 
methods, such as hemoglobin electrophoresis or 
molecular testing, are required to accurately identify the 
condition.27 

6. Limited Sensitivity in Pregnancy 

The sensitivity of the Mentzer Index in detecting anemia 
in pregnant populations is lower compared to its 
performance in non-pregnant individuals. Pregnant 
women may present with various forms of anemia that 
do not conform strictly to the patterns seen in IDA or 
thalassemia, especially if there are complications such 

as preeclampsia, gestational diabetes, or other medical 
conditions. These conditions can affect the MCV, RBC 
count, and other hematological parameters, leading to 
less accurate MI values. As a result, the MI may not 
always provide a clear or reliable distinction between 
different types of anemia in pregnant women, making 
the use of supplementary diagnostic tests essential.20 

7. Variations in Population-Specific Values 

The cut-off values used for the Mentzer Index (typically 
MI <13 indicating thalassemia and MI >13 indicating 
IDA) are based on population studies and may not be 
universally applicable across all populations. Genetic 
and ethnic differences can influence MCV and RBC 
counts, meaning that the MI thresholds may vary in 
different geographic or demographic groups. For 
example, in populations with a high prevalence of 
thalassemia or other hemoglobinopathies, the MI cut-off 
may need to be adjusted to account for regional 
differences in hematological profiles. This variability in 
MI interpretation could lead to misdiagnoses if 
population-specific adjustments are not considered.21 

Clinical Implications  

The Mentzer Index (MI) offers significant clinical value 
in the diagnosis and management of anemia during 
pregnancy, particularly in distinguishing between iron-
deficiency anemia (IDA) and thalassemia traits. 
However, its application must be carefully considered 
within the broader clinical context to ensure accurate 
diagnosis and effective treatment. 

1. Early Differentiation Between IDA and 
Thalassemia Traits 

One of the primary clinical implications of the Mentzer 
Index is its ability to assist in early differentiation 
between iron-deficiency anemia and thalassemia traits, 
which can present with similar symptoms of microcytic 
anemia. Iron-deficiency anemia, which is often due to 
inadequate iron intake or increased iron requirements 
during pregnancy, responds well to iron 
supplementation. In contrast, thalassemia traits, which 
are genetic disorders affecting hemoglobin production, 
are not treated with iron and can actually be 
exacerbated by iron supplementation. The ability to 
differentiate between these two conditions using the MI 
can help prevent the inappropriate use of iron 
supplements, thereby avoiding potential complications 
like iron overload in patients with thalassemia traits. 
Accurate early diagnosis ensures that pregnant women 
receive the appropriate treatment tailored to their 
specific condition, reducing the risk of adverse 
outcomes for both the mother and the fetus.22 

2. Facilitating Cost-Effective Diagnosis in Resource-
Limited Settings 

In resource-limited settings, where access to advanced 
diagnostic tools such as hemoglobin electrophoresis or 
genetic screening may be unavailable, the Mentzer 
Index provides a cost-effective and easily accessible 
method for distinguishing between IDA and thalassemia 
traits. As it relies solely on parameters from a routine 
complete blood count (CBC), which is commonly 



Emmanuel Ifeanyi Obeagu                                                                                                      Asian Journal of Dental and Health Sciences. 2025; 5(1):34-39 

[38]                                                                                                                                                                                                                                              AJDHS.COM 

available even in settings with limited resources, the MI 
serves as a valuable first-line tool for clinical decision-
making. In areas with a high prevalence of thalassemia 
traits, the MI can help healthcare providers promptly 
identify patients who may require further diagnostic 
testing, such as hemoglobin electrophoresis, while 
avoiding unnecessary interventions or misdiagnoses. 
This can lead to more efficient use of healthcare 
resources and better-targeted care for pregnant women 
with anemia.23 

3. Risk Stratification and Management Decisions 

Accurate identification of the type of anemia in 
pregnancy can have significant implications for 
management decisions. For instance, IDA is typically 
treated with oral or intravenous iron supplementation, 
dietary adjustments, and in some cases, blood 
transfusions if the anemia is severe. On the other hand, 
thalassemia traits usually require no iron therapy, and 
management focuses on monitoring and ensuring that 
the patient does not receive excessive iron. Additionally, 
identifying thalassemia traits may prompt genetic 
counseling, as it has implications for the patient’s 
offspring and the risk of having a child with thalassemia 
major. By using the MI to differentiate between these 
conditions, clinicians can tailor their management plans 
more effectively, improving maternal and fetal 
outcomes by ensuring the right interventions are 
implemented.24 

4. Prevention of Misdiagnosis and Over-Treatment 

The clinical implications of misdiagnosing anemia are 
significant, especially in pregnancy, where both the 
mother and fetus are vulnerable. Misdiagnosis can lead 
to inappropriate treatments, such as the overuse of iron 
supplements in patients with thalassemia traits, 
potentially resulting in iron overload and other related 
complications, including organ damage. Conversely, 
failure to identify thalassemia traits could delay 
appropriate genetic counseling and interventions. By 
incorporating the Mentzer Index into clinical practice, 
healthcare providers can reduce the risk of over-
treatment and prevent unnecessary interventions, 
ensuring that patients are not exposed to harmful 
therapies that do not address the underlying cause of 
anemia.25 

5. Guiding Prenatal Care and Monitoring 

The Mentzer Index also plays a role in guiding the 
overall prenatal care and monitoring of pregnant 
women with anemia. Regular screening for anemia is a 
routine part of prenatal care, and the MI can help 
clinicians determine whether further investigation is 
necessary. For example, if the MI suggests the possibility 
of thalassemia traits, clinicians may recommend genetic 
testing or hemoglobin electrophoresis to confirm the 
diagnosis. If IDA is suspected, the focus will shift to iron 
supplementation and addressing dietary deficiencies. By 
using the MI as a screening tool, clinicians can more 
efficiently determine the appropriate next steps in 
managing anemia and provide personalized care for 
pregnant women. This proactive approach to 
monitoring can reduce the risk of complications, such as 

preterm delivery, low birth weight, and fetal growth 
restriction, which are often associated with untreated 
anemia during pregnancy.26 

6. Ethical and Social Implications 

The use of the Mentzer Index in pregnancy also carries 
ethical and social implications, particularly in 
populations where thalassemia traits are prevalent. In 
such populations, early identification of thalassemia 
traits allows for informed genetic counseling, which can 
help prospective parents understand the implications of 
carrier status and the risk of passing on thalassemia 
major to their children. This can lead to better 
reproductive decision-making and early interventions, 
such as prenatal diagnosis, in cases where both parents 
are carriers. However, this also raises ethical concerns 
about how genetic information is communicated to 
patients, particularly in settings where there may be 
limited understanding or stigma associated with certain 
genetic conditions. Healthcare providers must approach 
the use of the Mentzer Index and subsequent counseling 
with sensitivity, ensuring that patients receive 
appropriate support and information.27 

Conclusion 

The Mentzer Index (MI) is a valuable diagnostic tool for 
the differential diagnosis of anemia in pregnancy, 
particularly in distinguishing between iron-deficiency 
anemia (IDA) and thalassemia traits. Its simplicity, cost-
effectiveness, and ease of use make it an essential tool in 
clinical practice, especially in resource-limited settings 
where advanced diagnostic techniques may not be 
readily available. The MI can assist healthcare providers 
in making informed decisions about the appropriate 
treatment, such as iron supplementation for IDA or 
avoiding iron therapy in individuals with thalassemia 
traits. This early differentiation helps to prevent the 
misuse of iron supplements, reducing the risk of iron 
overload and associated complications in pregnant 
women with thalassemia traits. 

Conflict of Interest: Author declares no potential 

conflict of interest with respect to the contents, 

authorship, and/or publication of this article. 

Source of Support: Nil 

Funding: The authors declared that this study has 

received no financial support. 

Informed Consent Statement: Not applicable.  

Data Availability Statement: The data supporting in 

this paper are available in the cited references.  

Ethics approval: Not applicable. 

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Emmanuel Ifeanyi Obeagu                                                                                                      Asian Journal of Dental and Health Sciences. 2025; 5(1):34-39 

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https://doi.org/10.22270/ijmspr.v10i2.95
https://doi.org/10.2147/IJWH.S89308
https://doi.org/10.18203/issn.2454-2156.IntJSciRep20180394
https://doi.org/10.22270/ijmspr.v10i4.122
https://doi.org/10.22270/ijmspr.v10i2.104
https://doi.org/10.1002/hem3.108
https://doi.org/10.1515/cclm-2013-0354
https://doi.org/10.1515/cclm-2015-0155
https://doi.org/10.29082/IJNMS/2023/Vol7/Iss3/543
https://doi.org/10.53350/pjmhs221651225
https://doi.org/10.1155/2014/576738
https://doi.org/10.1515/CCLM.2008.355
https://doi.org/10.22270/ijmspr.v10i4.121
https://doi.org/10.22270/ijmspr.v10i2.103
https://doi.org/10.22270/ijmspr.v10i4.120
https://doi.org/10.19080/JGWH.2023.25.556169

