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: a test of the blood specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

My doctors don’t charge $500 to take my blood pressure or $1,200 for a blood test. WSJ, "There Are Plenty of Dangers in Being Your Own Doctor," 18 Feb. 2019 Police took him to Eskenazi Hospital for a blood test. Vic Ryckaert, Indianapolis Star, "Lawrence officer hurt in crash with drunken-driving suspect," 11 July 2018 That is because the study, conducted in Scandinavia and published online Wednesday by the New England Journal of Medicine, began in 1989 before widespread use of blood tests that detect prostate cancer early. Peter Loftus, WSJ, "Surgery Adds Three Years to Lives of Prostate-Cancer Patients, Study Finds," 12 Dec. 2018 Finally, a series of blood tests taken around the time of the U.S. Open confirmed rheumatoid arthritis. Louisa Thomas, Vogue, "A Night Out With Caroline Wozniacki and David Lee, Sports’ Most Romantic Couple," 11 Dec. 2018 Several appointments for blood tests and transvaginal ultrasounds may be required. Jennifer Gerson, Marie Claire, "Health & Fitness," 1 Oct. 2018 The report said Legend’s early results may be flawed because, on follow-up visits, patients were evaluated with blood tests instead of a more accurate bone-marrow biopsy. Preetika Rana, WSJ, "GenScript Shares Drop on Report Alleging Safety Violations by Unit Partnered With Johnson & Johnson," 27 Sep. 2018 But if an officer believes you’ve been impaired by something other than alcohol, you can be ordered to take a blood test for the presence of drugs. Kathleen Purvis And Myah Ward, charlotteobserver, "Here's what you need to know about drunk driving in the Carolinas," 29 June 2018 O'Bryant has been developing a blood test for years that looks for specific biomarkers of Alzheimer's. Hanaa’ Tameez And Rodger Mallison, star-telegram, "Mexican-Americans show signs of Alzheimer's 10 years earlier than others, study says," 19 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

13 Mar 2019

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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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Rhyming Dictionary: Words that rhyme with blood test

Spanish Central: Translation of blood test

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

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