McVeigh D J, van der Weyden M B
Haematology Department, Alfred Hospital, Prahran, Victoria, Australia.
Clin Lab Haematol. 1989;11(4):369-73. doi: 10.1111/j.1365-2257.1989.tb00235.x.
Two groups of patients with alert flags on the Technicon H1 analyser, indicating erroneous results for haemoglobin and platelet determinations, were identified. These were due to turbidity from a high WBC affecting haemoglobin or small red cells affecting platelet counts. Data generated by the H1 analyser have been utilized to derive correct Hb and platelet values; for these derivations the haemoglobin utilized the cellular haemoglobin concentration mean and for platelet counts the P COUNT was used. In a prospective study, derived haemoglobin and platelet counts were not significantly different to values obtained by standard haematological techniques. These simplified methods for correcting spurious results have allowed for speedier results and increased laboratory efficiency.
