immunoassay

noun

im·​mu·​no·​as·​say ˌi-myə-nō-ˈa-ˌsā How to pronounce immunoassay (audio)
i-ˌmyü-nō-, 
-a-ˈsā How to pronounce immunoassay (audio)
: a technique or test used to detect the presence or quantity of a substance (such as a protein) based on its capacity to act as an antigen
immunoassayable
ˌi-myə-nō-a-ˈsā-ə-bəl How to pronounce immunoassay (audio)
i-ˌmyü-nō
adjective

Examples of immunoassay in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Enzyme immunoassays, however, can be performed as a point of care test with results available in 15 minutes to an hour. — Tanya Feke, Verywell Health, 4 Apr. 2024 The authors tested the samples using immunoassay test strips similar to those used to measure alcohol levels in humans. — ArsTechnica, 25 Feb. 2026 These tests typically rely on immunoassay techniques that look for metabolites produced by the breakdown of various drugs in the body. — Amber Smith, Discover Magazine, 25 July 2023 Antibody and antigen tests are typically run as lateral flow immunoassays, says Lalli, and—like pregnancy tests—come as a dipstick. — Naomi Xu Elegant, Fortune, 26 May 2020 The new method uses a conventional fluorescence polarization immunoassay (FPIA), a technique that harnesses fluorescent dye and light to detect antibodies. — Fox News, 21 Apr. 2020

Word History

Etymology

immuno- + assay entry 2

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of immunoassay was in 1959

Rhymes for immunoassay

See All Rhymes for immunoassay

Browse Nearby Words

immuno-
immunoassay
immunoblot
See all Nearby Words

Cite this Entry

“Immunoassay.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immunoassay. Accessed 8 Jul. 2026.

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Medical Definition

immunoassay

noun
im·​mu·​no·​as·​say ˌim-yə-nō-ˈas-ˌā How to pronounce immunoassay (audio) im-ˌyü-nō- How to pronounce immunoassay (audio)
-a-ˈsā
: a technique or test (as the enzyme-linked immunosorbent assay) used to detect the presence or quantity of a substance (as a protein) based on its capacity to act as an antigen or antibody
immunoassay transitive verb
immunoassayable
-a-ˈsā-ə-bəl How to pronounce immunoassay (audio)
adjective
Last Updated: - Updated example sentences
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