Reason/Issue |
STFR reagent lots# 606453 and 606449 may show elevated imprecision and possible high recovery of sTfR Control Set Level 1. This issue can lead to a bias in the STfR results (max + 11%, min-15.1%) in patient samples.
In case of erroneous high sTfR results, unnecessary further examination of erythropoesis and iron status are possible. However, no treatment decision should be based on sTfR values alone. Medical history, further findings and other parameters such as transferrin, reticulocyte count, iron, Hb, heamatocrit, MCV, LDH, ferritin should be taken into account. In case of the erroneous low/normal results a delay in differential diagnosis of anaemic condition cannot be excluded. |