Step 1: Understand the diagnostic tests for HIV.
The laboratory diagnosis of HIV infection is primarily done through ELISA (Enzyme
-Linked Immunosorbent Assay) and HIV viral load test.
- The ELISA test (D) detects antibodies against HIV.
- The HIV viral load test (C) measures the amount of HIV in the blood, providing insight into the severity of the infection.
- The Western Blot (B) is often used to confirm a positive ELISA result, and the Absolute CD4 count (A) helps in assessing the immune status but is not typically used for initial diagnosis.