blood test

noun

: a test of the blood

specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of a particular disease or medical condition (such as diabetes, cardiovascular disease, or cancer) or serve to indicate the degree of function of a specific organ (such as the liver or kidney)

Examples of blood test in a Sentence

He had a blood test, and the doctor who did it said his cholesterol was too high.

Recent Examples on the Web

The famed trainer was banned from the Louisville track in 2021 after his Kentucky Derby winner, Medina Spirit, failed a post-race blood test. —Teresa Genaro, New York Times, 2 May 2025

Read More: New Surgery for Prostate Cancer Could Reduce Some Unwanted Side Effects Why Cancer Current Tests Fall Short The current standard for prostate cancer screening relies heavily on a blood test that measures PSA levels. —Discover Magazine, 29 Apr. 2025

Coogler even mimics the famous blood test from The Thing, this time with cloves of garlic to determine who among them is not themselves. —A.a. Dowd, Rolling Stone, 17 Apr. 2025

Less invasive test for Alzheimer’s risk Alzheimer’s blood tests are the key to widespread prevention of dementia, experts say. —Sandee Lamotte, CNN Money, 7 Apr. 2025

Word History

First Known Use

1851, in the meaning defined above

Rhymes for blood test

• abreast
• accessed
• addressed
• appressed
• armrest
• arrest
• assessed
• attest
• backrest
• behest
• bequest
• caressed

Kids Definition

blood test

noun

: a test of the blood (as to detect the presence of disease-causing agents or determine the number of blood cells)

Medical Definition

blood test

noun

: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of a particular disease or medical condition (as diabetes, cardiovascular disease, or cancer) or serve to indicate the degree of function of a specific organ (as the liver or kidney)