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

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

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

Examples of laboratory test in a Sentence

Recent Examples on the Web

In laboratory tests conducted in Professor Timo Repo’s research group, the compound demonstrated an unusually high carbon-capture capacity. —Neetika Walter, Interesting Engineering, 30 Dec. 2025

In laboratory tests, the MIT sodium-air fuel cell prototype delivered more than five times as much energy per kilogram as the lithium-ion batteries currently used in electric cars. —The Week Uk, TheWeek, 30 Dec. 2025

To confirm whether the red sediment’s discoloration and the altered artefacts were a deliberate human hearth rather than a natural occurrence, Ashton and his colleagues performed specific laboratory tests. —Jay Kakade december 30, New Atlas, 30 Dec. 2025

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

Word History

First Known Use

1859, in the meaning defined above

Rhymes for laboratory test

• abreast
• accessed
• addressed
• appressed
• armrest
• arrest
• assessed
• attest
• backrest
• behest
• bequest
• caressed