The confirmatory test used to diagnose AIDS is

Options

A. ELISA
B. Schick
C. WIDAL
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the confirmatory test used to diagnose AIDS. AIDS is caused by the HIV virus.

2. **Identifying the Tests**: The most common tests used to diagnose HIV infection include:
- ELISA (Enzyme Linked Immunosorbent Assay)
- Western Blot
- PCR (Polymerase Chain Reaction)

3. **Confirmatory Test**: While ELISA is often used as a preliminary screening test for HIV, the confirmatory test for an HIV positive result is typically the Western Blot test.

4. **Conclusion**: Therefore, the confirmatory test used to diagnose AIDS is the **Western Blot test**.

### Final Answer:
The confirmatory test used to diagnose AIDS is the **Western Blot test**.

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