blood test


Definition of blood test 

: a test of the blood specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

Initially, the first boys rescued were reported to be in good health, while an official later said in a news conference that some blood tests showed signs of infection, NPR reported. Sarah Klein,, "The Rescued Thai Soccer Team Is Being Monitored For 'Cave Disease' and Other Health Concerns," 10 July 2018 My blood test confirmed the doctor’s suspicions; monosodium urate monohydrate crystals had gathered at my ankle like unwanted relatives. Josh Max, New York Times, "When a Vegan Gets Gout," 5 July 2018 Her blood tests, chest x-ray and EKG were all normal., "Medical mystery: An unexpected - and ironic - cause of chest pain," 24 June 2018 In civil-fraud charges filed in March against Ms. Holmes, the Securities and Exchange Commission alleged that claim was a lie and that Theranos used commercial machines made by other companies for the vast majority of its blood tests. John Carreyrou, WSJ, "Theranos Cost Business and Government Leaders More Than $600 Million," 3 May 2018 People generally become ill 15 to 50 days after exposure and a blood test can confirm the presence of the virus. Shari Rudavsky, Indianapolis Star, "Indiana sees first death in multi-state hepatitis A outbreak," 11 July 2018 Valley Fever and blood tests on the dog come up with no answer. Lily Altavena, azcentral, "Controversy in the air as Mesa homeowners decry neighboring asphalt plant’s odors," 11 July 2018 Down syndrome can be detected in fetuses through blood tests and amniocentesis, a test that samples amniotic fluid in the uterus to detect developmental abnormalities. Gillian Mcgoldrick,, "Pa. lawmakers pushing controversial bill banning Down syndrome abortions," 13 June 2018 His doctor told him multiple times to get a blood test and an MRI, but Sao refused. Molly Sullivan, sacbee, "How do you get a skeptical patient to test for cancer? UCD, health center target cultural barriers," 2 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blood test.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of blood test

1851, in the meaning defined above

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Last Updated

9 Oct 2018

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Time Traveler for blood test

The first known use of blood test was in 1851

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More Definitions for blood test

blood test


English Language Learners Definition of blood test

: a test of the blood especially to learn if a person has any diseases or conditions (such as AIDS or high cholesterol)

blood test


Medical Definition of blood test 

: a test of the blood (as a serological test for syphilis)

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Britannica English: Translation of blood test for Arabic Speakers Encyclopedia article about blood test

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