![]() In the case where an assay is negative or indeterminate over all seroconversion follow up bleeds, two additional days are assigned. HIV infection is therefore diagnosed by the detection of HIV Ag/Ab confirmed by a positive. The overall day delay was then the total day difference divided by the number of panels tested. An indeterminate Western Blot assay should be followed by repeat HIV serology tests after 4 to 6 weeks, to exclude an evolving HIV antibody response. Timing of anti-HIV detection was the time difference (days) in detection of the 1st HIV positive sample of a panel between MPD HIV Blot 2.2 and Chiron RIBA HIV-1/HIV-2 SIA. The average score for the sensitivity of an assay was the total number of positive bleeds divided by the total number of panels tested. The number of bleedings detected positive for HIV 1/2 was counted for each panel and compared between the two test kits. The first two strips are a negative and a positive control, respectively. The detection of HIV in the seroconversion panels by MPD HIV Blot 2.2 was compared with the Chiron RIBA HIV-1/HIV-2 SIA. Includes an anti-IgG internal control bandĪnalysis of sensitivity in seroconversion panels.Provides detection of HIV-2 antibodies on the same strip.Increases detection of early infection (seroconversion panels).Contains purified HIV-1 viral lysate proteins Confirmation is available within 2-24 hours of positive HIV screening test results, greatly reducing turnaround time compared to western blots The algorithm.In the past, the Western blot test was used to confirm the results of an ELISA test. ![]() Advantages of HIV Blot 2.2 Western Blot Assay The Western blot and ELISA tests are two blood antibody tests that may be used to detect HIV. ![]()
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