Measurement of sTfR is used to diagnose iron deficiency in individuals with chronic disease (inflammatory diseases, infections, malignancies), many of whom are anemic.
Immediately following collection, mix sample by gently inverting 5 times
Refrigerated (preferred) - 14 days
Ambient - 14 days
Frozen - 14 days
Freeze/thaw cycles - stable x3
Immunochemiluminometric assay (ICMA)
12.2−27.3 nmol/L