Which statement about nucleated red blood cell (nRBC) correction is true?

Which statement about nucleated red blood cell (nRBC) correction is true?

• A. It measures platelet function
• B. It increases RBC count
• C. It helps avoid falsely elevating WBC count
• D. It has no effect on WBC count

Answer: (C)

NRBC correction is about getting an accurate white blood cell count when nucleated red blood cells are present. Automated counters can mistake nucleated RBCs for white blood cells, which makes the WBC count seem higher than it really is. By correcting for NRBCs, you subtract the estimated contribution of these nucleated RBCs, preventing a falsely elevated WBC result. This has nothing to do with platelet function or directly increasing RBC counts, and it specifically changes the WBC value when NRBCs are present. In practice, correction is done either with a manual smear differential or with a correction factor applied by the analyzer to reflect the true WBC count.

NRBC correction is about getting an accurate white blood cell count when nucleated red blood cells are present. Automated counters can mistake nucleated RBCs for white blood cells, which makes the WBC count seem higher than it really is. By correcting for NRBCs, you subtract the estimated contribution of these nucleated RBCs, preventing a falsely elevated WBC result. This has nothing to do with platelet function or directly increasing RBC counts, and it specifically changes the WBC value when NRBCs are present. In practice, correction is done either with a manual smear differential or with a correction factor applied by the analyzer to reflect the true WBC count.