Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
Recombinant DNA Technology
Serum and Urine analysis
Polymerase Chain Reaction (PCR) technique
Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
Recombinant DNA technology, PCR, and ELISA are advanced molecular diagnostic techniques used for early detection of pathogens. Serum and urine analysis are conventional diagnostic methods that typically detect diseases only after symptoms have appeared, thus they are not considered techniques for 'early' diagnosis in the molecular sense.
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