What laboratory tests are typically used to confirm HIV infection?

• A. Complete blood count (CBC)
• B. ELISA and Western Blot tests
• C. Urinalysis tests
• D. X-rays of the chest

Answer: (B)

The choice of ELISA and Western Blot tests as the correct answer is based on the established protocols for diagnosing HIV infection. The ELISA (Enzyme-Linked Immunosorbent Assay) test is initially used to screen for the presence of antibodies against HIV. If the ELISA test indicates a positive result, a follow-up confirmatory test is performed using the Western Blot method, which detects specific proteins associated with HIV. This two-step testing approach helps ensure accurate diagnosis and minimizes false positives, making it the standard in clinical practice for confirming HIV infection.

Complete blood count (CBC), urinalysis tests, and chest X-rays do not specifically assess for HIV. While a CBC can provide information about immune cell levels and may indicate certain health issues related to HIV, it cannot confirm the presence of the virus itself. Urinalysis tests do not relate to HIV diagnosis and are used for different health assessments. Similarly, chest X-rays may be conducted if an individual with HIV shows respiratory symptoms, but they do not provide direct evidence of HIV infection. Thus, ELISA and Western Blot remain the pivotal tests for confirming HIV status.