Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
- Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
- Recombinant DNA technology
- Serum and Urine analysis
- Polymerase Chain Reaction (PCR) technique
The correct answer is 3) Serum and Urine analysis. Using the conventional method of diagnosis (like serum and urine analysis), early detection of disease is not possible as the markers for most diseases appear late.
ELISA is a diagnostic technique used to detect the presence of antibodies or antigens in a patient’s sample. It is often used for the early diagnosis of diseases and is particularly valuable for detecting infectious diseases such as HIV, hepatitis, and various other conditions.
Recombinant DNA technology involves the fusion of DNA molecules from disparate species, which are then integrated into a host organism, resulting in the creation of novel genetic combinations. This technique can offer accurate genetic disease diagnostic insights.
PCR is a highly sensitive and widely used molecular biology technique for amplifying specific DNA sequences. It is commonly used in diagnostic tests to detect the DNA of pathogens like viruses or bacteria, making it suitable for early disease diagnosis.