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RIBA stands for which assay?
Correct Answer:
Recombinant immunoblot assay
Explanation:
RIBA stands for Recombinant Immunoblot Assay. The term “immunoblot” refers to a blot-based test that detects antibodies in a person’s serum by measuring binding to specific proteins. The “recombinant” part means the antigens used are recombinant proteins, chosen to target particular HIV components and improve specificity. This naming is the standard way labs describe this confirmatory HIV antibody test, distinct from a general “analysis,” a concept like “randomized,” or a nonstandard phrasing such as “reactive immunoblot approach.”

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