Multiple choice

Name the confirmatory test for HIV diagnosis.

  1. ELISA

  2. Western blot

  3. Fluorescent microscopy

  4. RIA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Western blot is the confirmatory test for HIV. Only specimens that are repeatedly reactive by ELISA and reactive by Western blot are considered HIV-positive and indicative of HIV infection. Specimens that are repeatedly ELISA-reactive occasionally provide an indeterminate Western blot result, which may be either an incomplete antibody response to HIV in an infected person or nonspecific reactions in an uninfected person.

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