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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

Lawyers representing Special Olympian Angelo Schettino were able to obtain the sergeant’s medical records and blood test from that night. —Colleen Cronin, Boston Herald, 26 Mar. 2026

As Alpha waits for the results of blood tests, she is startled by the sudden appearance of a gaunt, jittery stranger in their apartment. —Los Angeles Times, 26 Mar. 2026

Thanyalak Boontham, one of the plaintiffs, said her blood tests showed toxin levels exceeding safety standards. —ABC News, 24 Mar. 2026

Both are simple blood tests that are often left off standard panels unless specifically requested. —Allison Palmer, Sacbee.com, 20 Mar. 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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)