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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

Prostate cancer’s presence can be detected through a blood test, which can signal to doctor’s that a patient has symptoms of the disease. —Sean Neumann, People.com, 5 June 2025

According to police, a blood test later allegedly found that Andrade had alcohol and marijuana in his system at the time of the crash. —Justin Muszynski, Hartford Courant, 3 June 2025

Now his own blood test and a sudden EPA reversal give his work urgent relevance. —Deni Ellis Béchard, Scientific American, 28 May 2025

The introduction of the prostate-specific antigen (PSA) blood test as a prostate cancer screening test (early detection) in the early 1990s led to a dramatic 50% decline in prostate cancer deaths. —Franklin D Gaylis, San Diego Union-Tribune, 28 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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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)