laboratory test
noun
variants
or lab test
: a test conducted under controlled scientific conditions in a laboratory or similar setting
… in laboratory tests of acyclovir, herpes strains have mutated to forms resistant to the drug.—
Linda Garmon
Linda GarmonWe've measured the amount of soap in shampoos and used lab tests to determine cleaning action and pH.—Consumer Reports
Consumer Reports
specifically, medical
: a test (such as a blood test or urinalysis procedure) performed by a medical laboratory on a specimen taken from a patient
Even experienced doctors cannot distinguish "strep" throat from other-caused sore throats without a laboratory test of fluid taken from the throat. —Melva Weber
Melva Weber Those two values are seen with a complete blood count, the lab test that enumerates the number of white and red blood cells. —Paul G. Donahue
Paul G. Donahue
laboratory testing
noun
or less commonly lab testing
… it has survived nearly two years of strenuous independent laboratory testing and been certified safe for home and commercial use.
—Harper's
Harper's
Examples of laboratory test in a Sentence
Recent Examples on the Web
Muscle biopsies and laboratory tests further showed that the genes responsible for the body’s cellular clocks were more synchronized under natural light conditions, the study revealed.
—Khloe Quill, FOXNews.com, 22 Dec. 2025
The results matched standard laboratory tests perfectly.
—Pranjal Malewar, New Atlas, 19 Dec. 2025
In laboratory tests, the prototype delivered an output temperature of 518 degrees Fahrenheit (270 degrees Celsius) while relying on a 293 degrees Fahrenheit (145 degrees Celsius) heat source to drive the cycle.
—Georgina Jedikovska, Interesting Engineering, 16 Dec. 2025
Possible False Laboratory Results Excessive vitamin C may interfere with certain laboratory tests.
—Sarah Jividen, Verywell Health, 5 Dec. 2025
See All Example Sentences for laboratory test
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Khloe Quill, FOXNews.com, 22 Dec. 2025
The results matched standard laboratory tests perfectly.
—Pranjal Malewar, New Atlas, 19 Dec. 2025
In laboratory tests, the prototype delivered an output temperature of 518 degrees Fahrenheit (270 degrees Celsius) while relying on a 293 degrees Fahrenheit (145 degrees Celsius) heat source to drive the cycle.
—Georgina Jedikovska, Interesting Engineering, 16 Dec. 2025
Possible False Laboratory Results Excessive vitamin C may interfere with certain laboratory tests.
—Sarah Jividen, Verywell Health, 5 Dec. 2025
See All Example Sentences for laboratory test
Cite this Entry
“Laboratory test.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/laboratory%20test. Accessed 29 Dec. 2025.
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