Early Disease Diagnosis Methods — NEET Biology
✅ Asked in NEET 2023Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment? (NEET 2023)
Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment? (NEET 2023)
Answer & NCERT explanation
Correct answer: C — Serum and Urine analysis
Serum and urine analysis is a general diagnostic technique that doesn't specifically serve early disease diagnosis. While it can detect diseases, it's not primarily designed for early detection like ELISA (detects specific antigens/antibodies), recombinant DNA technology (genetic screening), or PCR (amplifies specific DNA sequences for early pathogen detection).
Read more NCERT concept on the PYQ
You know that for effective treatment of a disease, early diagnosis and understanding its pathophysiology is very important. Using conventional methods of diagnosis (serum and urine analysis, etc.) early detection is
NTA tests whether students understand why conventional diagnostic methods (serum and urine analysis) cannot detect diseases at their earliest stages. The core concept is that these traditional methods have limited sensitivity and require a disease to progress sufficiently before biomarkers become detectable. Students often mistakenly assume conventional methods are always reliable for early detection. The key to remember: conventional methods are useful for diagnosis but NOT for early or preventive detection. Modern biotechnology techniques like PCR, gene sequencing, and immunoassays can detect biomarkers much earlier, making them crucial for screening in asymptomatic individuals.
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Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.