Question

ELISA test is done to check-

• A. Gonorrhoea
• B. Diabetes
• C. Tuberculosis
• D. AIDS

Hint:

ELISA detects antibodies in blood and is the standard first screening test for HIV infection.

Answer 1

The Correct Option is D

Step 1: Recall what ELISA stands for and does.
ELISA stands for Enzyme Linked Immunosorbent Assay. It is a blood test that detects specific antibodies or antigens in a sample using an enzyme linked reaction that produces a colour change.

Step 2: Connect ELISA to its main use.
ELISA is widely used to detect antibodies against the Human Immunodeficiency Virus (HIV), the virus that causes AIDS. When a person is infected with HIV, their immune system makes antibodies against it, and ELISA picks up these antibodies in the blood. It is usually the first screening test done before a confirmatory test like Western blot.

Step 3: Check why the other options are wrong.
Gonorrhoea (option A) is usually diagnosed through microscopy or culture of a swab sample, not ELISA as the standard test. Diabetes (option B) is diagnosed by measuring blood sugar levels, such as fasting glucose or HbA1c, which has nothing to do with ELISA. Tuberculosis (option C) is diagnosed mainly through sputum microscopy, culture, or the Mantoux skin test, not through ELISA.

Step 4: Final Answer.
ELISA is mainly used as a screening test for AIDS (HIV infection). \[ \boxed{\text{AIDS}} \]