KRT88P and hepatitis B virus infection: One study [52] assessed RDT performance in 113 HIV-negative Nigerian repeat blood donors, with clinical sensitivity 60% (95% CI: 36, 81); of note the 8 false negative samples were anti-HBc-positive and regarded as occult hepatitis B, with median HBV viral load 51 IU/ml (range 30–80 IU/mL).