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specifically : a laboratory test in which a sample of blood is withdrawn from the body to analyze the level of substances or cells (such as glucose, hemoglobin, or white blood cells) that indicate the presence or probable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

If approved, the blood test may act as a preliminary test to rule out cases and identify which patients should undergo more advanced testing, Parnas said. —Binghui Huang, The Indianapolis Star, 15 Apr. 2024

Though blood tests known as prostate-specific antigen (PSA) tests are now the standard for screening, many men still associate prostate cancer exams with rectal exams. —Robin Cole, Fortune, 12 Apr. 2024

These tests can include chest X-rays, swabbing the inside of the mouth or nose, pulse oximetry to detect levels of oxygen and blood tests. —Angela Rodriguez, Sacramento Bee, 7 Apr. 2024

The blood tests will be offered on Friday, April 5, at the Phoenix Convention Center, where March Madness events are being held, and on Saturday, April 5, at the Footprint Center, where the Black Coaches Association is holding its annual summit in conjunction with Final Four weekend. —Daniel Gonzalez, The Arizona Republic, 5 Apr. 2024

After the blood test, the man was booked in jail on charges of driving while intoxicated, possession of alcoholic beverages in a motor vehicle, possession of marijuana, possession of a schedule IV narcotic and resisting an officer. —Olivia Lloyd, Miami Herald, 28 Mar. 2024

Like a stool test, the blood test requires a follow-up colonoscopy if there’s an abnormal result, which could lead to more out-of-pocket costs. —Carla K. Johnson, Quartz, 13 Mar. 2024

The first blood test to screen for colorectal cancer could be approved this year — raising the potential to drastically increase the number of people diagnosed with the second-highest cause of cancer death in the United States. —Erika Edwards, NBC News, 13 Mar. 2024

The normal range: 60-140, according to the blood test included in Jack’s medical records. —Calmatters, The Mercury News, 12 Mar. 2024

Word History

First Known Use

1851, in the meaning defined above

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)