Analysis of double-positive rapid test results by enzyme immunoassay (OIC-HIV) and western blot (WB) banding pattern

D+s = Determine HIV-1/2® strong-positive. D+w = Determine HIV-1/2® weak-positive. U+s = UniGold HIV® strong-positive. U+w = UniGold HIV® weak-positive. POS = positive. NEG = negative. IND = indeterminate.1The discrepancy between banding patterns in OIC-HIV and WB may have been caused by either laboratory/clerical error, or different patterns of cross-reactivity between the two tests.2Using Centers for Disease Control criteria [13].3Using the manufacturer's interpretation.