id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajlm-2681	Pillay, Bavinash; van Blydenstein, Sarah A.; Omar, Shahed	Thromboelastography in COVID-19 patients: An observational study in the South African context	2025		.htm	text/html	5612	289	45	We found a significant correlation between anti-Xa levels and R-time at 48 h, where higher anti-Xa levels appear to coincide with longer R-time. Drawbacks with anti-Xa level monitoring include the additional cost of testing with estimates as high as 55 United States dollars (USD; approximately 500 South African rand [ZAR] – 1000 ZAR, or approximately 27 USD – 55 USD) per patient per test.6 Pre-analytic factors which may impair the validity of anti-Xa levels include poor blood sampling technique, delays of two or more hours in sample analysis, inadequate centrifugation, as well as haemolysis.	cache/ajlm-2681.htm	txt/ajlm-2681.txt