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.

Francois Blanchecotte, president of France's Federation of Medical Laboratories, said the urine test -- and possibly blood test -- would be able to determine if someone suffered from a "significant chronic intoxication".

From Barron's • May 13, 2026

My first symptoms were a crushing fatigue, leading to a doctor’s visit and a blood test.

From The Wall Street Journal • Apr. 19, 2026

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

Selina had been so concerned about her daughter she asked for a blood test; doctors thought she must have irritable bowel syndrome.

From BBC • Mar. 22, 2026

When the results of that blood test came back, Slavin’s doctor—unlike Moore’s —told him his body was producing something extremely valuable.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot

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