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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

Hi there:

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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