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The presence of HIV infection is confirmed by Western Blot analysis or by which other test?
AThe Body Mass Index measurement method
BEnzyme Linked Immunosorbent Assay (ELISA)
CA fasting blood glucose level test
DStandard DNA fingerprinting analysis
Answer & Solution
Correct answer: B. Enzyme Linked Immunosorbent Assay (ELISA)
1. Diagnosis of AIDS uses laboratory tests for HIV.
2. The text names Western Blot analysis and ELISA as the confirmatory tests.
3. BMI assesses obesity, blood glucose diagnoses diabetes, and DNA fingerprinting identifies individuals, so A, C and D are traps.
4. Hence the answer is B.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Health and Diseases", p.317_
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