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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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 agency added that the risks associated with the blood test are mainly the risk of a false positive or false negative test result. —Jacqueline Howard, CNN Money, 16 May 2025

The new generation of blood tests could lead to earlier diagnosis and give patients access to medication. —Ken Alltucker, USA Today, 16 May 2025

The main risk of the blood test is the possibility of a false positive or false negative, the FDA noted. —Youri Benadjaoud, ABC News, 16 May 2025

Up and coming blood tests could also help recruitment for Alzheimer’s clinical trials and cut down wait times for disease assessment. —Antonio Pequeño Iv, Forbes.com, 16 May 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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)