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: a test of the blood specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

The Fertilome test—which is a blood test or a simple spit-in-a-tube-and-wait-a-few-weeks-for-the-results test—is available through a doctor or fertility clinic and costs $950. Sally Holmes, Marie Claire, "Can This Test Tell You When You Should Have a Baby?," 1 Oct. 2018 But the less-invasive blood test, which analyzes tumor DNA shed into a person's circulation, could reveal TMB in the many patients where tissue testing doesn't work. Ken Garber, Science | AAAS, "Mutation-counting blood test could predict if cutting-edge immunotherapies can beat a cancer," 27 June 2018 To make these new experimental blood tests, the Quake team identified and zeroed in on the activity levels of specific genes in the fetus or its placenta. Dina Fine Maron, Scientific American, "Blood Test Could Predict Premature Birth Risk, Due Date," 7 June 2018 The blood tests are taken before and after consuming a high-calorie shake, allowing for a read on how the body metabolizes food and nutrients, says Dr. Joshua Anthony, Habit’s chief scientific officer. Caitlin Ostroff, WSJ, "Your DNA, Your Diet: How Nutrition Is Being Personalized," 30 Aug. 2018 The blood test accurately detected the disease 81 percent of the time. Macaela Mackenzie, Allure, "Melanoma Skin Cancer May Be Detected Early with a New Blood Test, Study Finds," 20 July 2018 The 45% accuracy for the blood test was based on an average of samples taken during the second and third trimester. Jacqueline Howard, CNN, "Blood tests to predict preterm birth risk raise excitement -- and questions," 7 June 2018 Hundreds of patients paid for blood tests and test results that were inaccurate, unreliable, and improperly validated, and in some cases which had had critical results removed, according to the indictment. Elizabeth Weise, azcentral, "Theranos founder Elizabeth Holmes and former president Balwani charged with federal fraud," 15 June 2018 Holmes, 34, founded Theranos in Palo Alto, Calif., in 2003, pitching its technology as a cheaper way to run dozens of blood tests. Ken Sweet,, "Theranos CEO Elizabeth Holmes charged with criminal fraud," 15 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

4 Dec 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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a nest or breeding place

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