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a test for the presence of ketonuria; a sample of the suspected urine is shaken up with a few drops of sodium nitroprusside, and a strong solution of ammonia water is then gently poured over the mixture; if acetone is present, a magenta ring forms at the line of contact; tablets containing sodium nitroprusside and alkali are now more commonly used.
A test for the presence of acetone in the urine; made by dribbling urine on a dipstick. The presence of acetone causes a color change on the dipstick, which can be compared to calibrated standards.
ac·e·tone test(asĕ-tōn test)
A laboratory evaluation of blood or urine to determine the organic synthesis of ketone bodies.