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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

If your liver blood test values are elevated, your healthcare provider may advise you to stop treatment or request additional liver blood tests. —Cristina Velocci, Flow Space, 11 May 2026

Shortly before her release from prison, Wang said authorities conducted unexplained blood tests and medical examinations. —Efrat Lachter, FOXNews.com, 10 May 2026

The same odorless, colorless chemicals in tap water here have accumulated in Bost’s body, blood tests show. —Dylan Jackson, ABC News, 6 May 2026

Additionally researchers are working on advanced blood tests that could look for hallmarks of the disease. —Aria Bendix, NBC news, 2 May 2026

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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)