Abstract
This study aimed to demonstrate potential measures to discern interference and establish an algorithm for identifying interference in an hs-cTnT assay with a clinical discrepancy. Laboratory error and disease factors were first excluded. Then, a serial dilution test, polyethylene glycol (PEG) precipitation, and heterophile antibody blocking reagents (HBRs) were performed to confirm the interference substance. In addition, high-speed centrifugation and western blot were tried. The sample diluted linearly (R2 = 0.9966). However, there was a dramatic reduction in the concentration of hs-cTnT concentration to a normal level after both PEG precipitation and HBR1 treatment. The results were inconclusive in high-speed centrifugation and western blot assay. This study elucidated a heterophile antibody interference in measurement of hs-cTnT alone on a Roche analyzer.
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