Utility of grey zone testing strategy in transfusion transmissible infection testing in blood bank is of limited value!

Correlation of serological and molecular markers in the screening for hepatitis B virus in blood bank in northern Brazil

“…Bhardwarj et al . 22 also found that none of the samples with gray zone results in the screening for transfusion transmissible infection (TTI) markers in blood bank, HBsAg included, proved to be positive in confirmatory testing. These findings suggest the limited value of inconclusive results to predict confirmed positive results.…”