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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

By comparing the results from the blood test to those from brain scans, the team determined that the blood test was 92% accurate in its readings of tau. —Alice Park, Time, 31 Mar. 2025

Federal funding is also supporting the development of blood tests for earlier detection of the disease. —Deborah Fuller, The Conversation, 28 Mar. 2025

This blood test has an accuracy rate comparable to that of stool tests. —Katia Hetter, CNN, 21 Mar. 2025

The pope's blood tests and blood counts remain stable, the Vatican said. —Jon Haworth, ABC News, 8 Mar. 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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)