What is the full form of "ELISA"?

Appeared in: UPPSC 2017

Explanation

ELISA stands for Enzyme-Linked Immunosorbent Assay.
This is a common laboratory technique that uses the specific binding of antibodies to antigens for detection.
An enzyme is linked to an antibody, and its reaction with a substrate produces a measurable color change, indicating the presence of the target substance.
The 'sorbent' part refers to the fact that one of the components (antigen or antibody) is adsorbed onto a solid surface, usually a microtiter plate.

Option A: This option incorrectly uses 'Lyses' and 'Solution Activity'. Lysis refers to cell breakdown, which is not the mechanism of ELISA. The correct term is 'Linked'.
Option C: This option incorrectly uses 'Integrated' and 'Solution Activity'. The correct terms are 'Immuno' and 'Sorbent' which describe the immunological principle and the solid phase of the assay.
Option D: This option incorrectly uses 'Lyses' and 'Solution'. The principle is not cell lysis, and 'Sorbent' is the correct term, referring to the solid-phase binding.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Full form of medical acronyms (ELISA) as background academic context rather than a clinical decision trigger.
Understanding the principle of ELISA is crucial for nurses as it is a foundational diagnostic test for many infectious diseases (like HIV, Hepatitis) and conditions they will encounter.
Nurses may be involved in collecting blood samples for ELISA testing and need to understand the importance of correct sample handling to ensure accurate results.
A key nursing role is patient education. Being able to explain in simple terms why a test like ELISA is being done (e.g., 'to check for infection-fighting proteins your body made') can reduce patient anxiety.

How to Approach the Question

This is a factual recall question asking for the full form of a common medical acronym.
First, read the acronym 'ELISA' and try to recall its full form from your studies in microbiology or biochemistry.
Analyze each part of the acronym: 'E' for Enzyme, 'L' for Linked, 'I' for Immuno, 'S' for Sorbent, and 'A' for Assay.
Carefully evaluate each option against your recalled knowledge.
Option A uses 'Lyses' and 'Solution', which are incorrect. Option C uses 'Integrated' and 'Solution', also incorrect. Option D uses 'Lyses' and 'Solution'.
Option B, 'Enzyme Linked Immune Sorbent Assay', correctly matches each letter of the acronym with the standard scientific term. Select this as the correct answer.

Concept Tested & Keywords

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E6 Microbiology Essentials Sastry 4e Part 1 p. 157-159

E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 206-208

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