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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

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.

The Sacramento district attorney’s office declined to file charges after a blood test showed there were no traces of drugs or alcohol in her system.

From Los Angeles Times • Apr. 7, 2026

The blood test often costs less than $100 when paid for directly.

From MarketWatch • Mar. 19, 2026

Researchers at Scripps Research have now introduced a different type of blood test that focuses on how proteins are folded in the bloodstream rather than how much of them is present.

From Science Daily • Mar. 12, 2026

A blood test that can tell if you have cancer?

From The Wall Street Journal • Mar. 2, 2026

I wonder if 1 can ask the doctor to do a blood test or something so that I can provide her with proof of my sobriety.

From "The Girl on the Train" by Paula Hawkins

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