laboratory test
noun
variants:
or lab test
Definition of laboratory 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 We've measured the amount of soap in shampoos and used lab tests to determine cleaning action and pH. — 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 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