2023 Biotechnology and its ApplicationsMolecular Diagnosis Medium Question 1 of 5 in Molecular Diagnosis

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

A Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
B Recombinant DNA Technology
C Serum and Urine analysis
D Polymerase Chain Reaction (PCR) technique

The answer is C.

Solution

PCR, ELISA and rDNA technology detect infection early; serum and urine analysis does not.

Of these, serum and urine analysis does not fulfil the purpose of early diagnosis of a disease. In early stages of infections, when the disease symptoms are not visible, amplification of pathogenic nucleic acid can be done by PCR, detection of antibodies produced by host against pathogen by ELISA and rDNA technology can serve the purpose of early diagnosis.

Concept early diagnosis techniques

Molecular Diagnosis in past papers

5 questions from this chapter have appeared across 4 exam years.