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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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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
Suspicion of other conditions may justify blood tests, stool tests, or endoscopy (imaging via inserting a tiny camera into the body).
—Amber J. Tresca, Verywell Health, 1 Dec. 2024
Researchers at Ohio State University College of Nursing have developed a blood test that can potentially predict the risk of preterm birth during the early stages of a pregnancy with about 97.5% accuracy.
—Alex Knapp, Forbes, 22 Nov. 2024
The ferritin test is a blood test that measures ferritin levels in the bloodstream.
—Lindsay Curtis, Health, 5 Nov. 2024
Increasing awareness can help diagnose sooner Diagnosis of Valley fever requires a blood test, one that is not included in routine lab work when a person goes to the emergency room or urgent care, Galgiani said.
—Lauren De Young, The Arizona Republic, 15 Nov. 2024
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Word History
First Known Use
1851, in the meaning defined above
Dictionary Entries Near blood test
Cite this Entry
“Blood test.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blood%20test. Accessed 21 Dec. 2024.
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: a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (as glucose, hemoglobin, or white blood cells) that indicate the presence or probable development of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
Britannica English: Translation of blood test for Arabic Speakers
Britannica.com: Encyclopedia article about blood test
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