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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

Standard blood tests then revealed his liver function to be out of sorts. —Bruce Y. Lee, Forbes.com, 16 Sep. 2025

However, there are other promising diagnostic tools in the pipeline such as using blood tests to detect the proteins linked with Alzheimer's. —Hannah Millington, MSNBC Newsweek, 12 Sep. 2025

The study reported that a blood test that measures LDL, HScrp, and lipoprotein(a) greatly adds to the prediction accuracy. —Bryant Stamford, Louisville Courier Journal, 11 Sep. 2025

The goal is to create a blood test that can be used to cut down on time trying to find ovarian cancer so doctors can treat it faster. —Helen Carefoot, Flow Space, 8 Sep. 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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)