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blood test

American

noun

a test of a sample of blood to determine blood group, presence of infection or other pathological condition, parentage, etc.

blood test British

noun

analysis of a blood sample to determine blood group, alcohol concentration, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

blood tests

plural

Etymology

Origin of blood test

First recorded in 1910–15

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

blood test

A simple blood test could help identify people at increased risk of Alzheimer's-related cognitive decline years before they experience any noticeable problems with memory or thinking.

From Science Daily ● Oct. 31, 2026

My dermatologist in Washington, D.C., didn’t even know a blood test could measure alpha-gal antibodies.

From Los Angeles Times ● Oct. 4, 2026

A cancer blood test has investors betting big, but will insurers pay for it?

From The Wall Street Journal ● Oct. 1, 2026

He said the drip of dextrose would have masked the insulin, making it harder to notice, but the blood test result would still register a very high level of insulin.

From BBC ● Sep. 25, 2026

If there are large numbers of people having the blood test, the medical director would be wise to take part of each sample, pool it, and test this pooled sample first.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023