ELISA is _________?
Correct answer: D. Addition of substrate that is converted into a coloured end product
- A. Using radiolabelled second antibody
- B. Usage of RBCs
- C. Using complement-mediated cell lysis
- D. Addition of substrate that is converted into a coloured end product
Explanation
ELISA uses an enzyme-linked antibody and a substrate that the enzyme converts into a coloured product, allowing the antigen or antibody to be detected. The radiolabelled second antibody is the likely alternative because it describes radioimmunoassay-type detection, not the enzyme-based signal of ELISA.
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