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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These are two blood tests that are monitored when taking warfarin. Jennifer Lefton, Ms, Rd/n, Cnsc, Fand, Verywell Health, 6 Mar. 2025 So Ulrich’s center helps train local doctors to do at least some of the blood tests and other steps of clinical trials that let patients from far away participate without traveling — a program threatened if her university loses tens of millions in NIH cuts. Lauran Neergaard and Kasturi Pananjady, Los Angeles Times, 6 Mar. 2025 That this news and this blood test doesn’t change anything for me. Rachel Desantis, People.com, 5 Mar. 2025 One of the most common tests is called the erythrocyte sedimentation rate, a blood test that measures the level of certain proteins that correlate with the amount of inflammation in the body. Akshay Syal, M.d., NBC News, 4 Mar. 2025 See All Example Sentences for blood test

Word History

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of blood test was in 1851

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Cite this Entry

“Blood test.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blood%20test. Accessed 13 Mar. 2025.

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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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

More from Merriam-Webster on blood test

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