Confirmattory test of syphilis is

Options

A. EIA
B. PCR
C. VDRT
D. DNA hybridisation

Answer

To answer the question regarding the confirmatory test for syphilis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for the confirmatory test for syphilis, which is a sexually transmitted infection caused by the bacterium Treponema pallidum.

2. **Identify the Options**: The options provided are:
- A) EIA (Enzyme Immunoassay)
- B) PCR (Polymerase Chain Reaction)
- C) VDRL (Venereal Disease Research Laboratory test)
- D) DNA hybridization

3. **Know the Tests**:
- **EIA**: This is an enzyme immunoassay that detects antibodies against syphilis.
- **PCR**: This test detects the genetic material of the bacterium and is used for various infections but is not the standard confirmatory test for syphilis.
- **VDRL**: This is a non-treponemal test used for screening syphilis but is not a confirmatory test.
- **DNA Hybridization**: This is a molecular technique that can be used to identify specific DNA sequences but is not commonly used for syphilis confirmation.

4. **Determine the Correct Answer**: The confirmatory test for syphilis is the **EIA (Enzyme Immunoassay)**, as it specifically detects antibodies against Treponema pallidum and confirms the presence of the infection.

5. **Final Answer**: The correct option is **A) EIA (Enzyme Immunoassay)**.