Prevalence of Anaemia and Evaluation of Transferrin Receptor (sTfR) in the Diagnosis of Iron Deficiency in the Hospitalized Elderly Patients: Anaemia Clinical Studies in Chile

Table 1

Techniques for ferrokinetics and haematological parameters and normal values according to manufacturer and iron deficiency criteria used in the study.

	Method	Manufacturer‘s normal value	Iron deficiency criteria
Serum iron	Iron liquicolor photometric colorimetric test for iron with lipid clearing	Men 59–148 ug/dL; Women 37–145 ug/dL	Men < 59 ug/dL; Women < 37 ug/dL
Total iron-binding capacity (TIBC)	TIBC test, iron saturation and aluminum oxide absorption method, human	250–370 ug/dL	>370 ug/dL
Ferritin (Ferr)	Electrochemiluminescence immunoassay. Roche, Elecsys 2010/modular analytics	30–300 ng/mL	<30 ng/mL
% Transferrin saturation (% Tsat)	TIBC test/iron liquicolor, human	20%–45% ref	<20%
Soluble transferrin receptor (sTfR)	Enzyme-linked quantikine IVD human sTfR immunoassay	8.7–28.1 nmol/L	>28,1 nmol/L
Ratio sTfR/log Ferritin (sTfR/log Ferr)		1-2	>2
MCV	SYSMEX. XE-alphaN; automated hematology system roche,	80–99 fL	≤80 fL
CHCM	SYSMEX. XE-alphaN,; automated hematology system roche,	32–36 ug/dL	≤32 ug/dL