Can the western blott pick up all antibodies of all the HIV subtypes in the world
Nov 19, 2011
Please help again going crazy
Response from Mr. Cordova
The Western Blot will pick up all subtypes of HIV. However, because of their high degree of specificity, should only be used as confirmatory tests following a repeatedly reactive (positive) ELISA, EIA or rapid test. There is a significant risk of a false-positive result for WB tests run independently of a preliminary positive screening test.
All antibody tests should detect the most common subtypes of HIV-1. The majority of HIV tests will also now detect HIV-2 and all but the very rarest of HIV-1 subtypes (usually only found in endemic areas in West Africa). A test that specifically detects the rare HIV-1 group O is also now available, though in most cases, a standard antibody test would identify a group O infection.
I hope this helps.
In health, Richard
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