breath test

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breath test

any diagnostic test in which endogenous or exogenous materials are measured in samples of breath as a means of identifying pathologic processes; examples include hydrogen breath testing for lactose intolerance or urea breath testing to detect gastric colonization with Helicobacter pylori.
Synonym(s): breath analysis

breath test

any of various tests in which a person's breath is analyzed for presence of something abnormal. Subgroups called the 13C breath tests and 14C breath tests involve administration of organic compounds labeled with carbon 13 (heavy carbon) or carbon 14 (radioactive carbon) and measuring the subsequent levels of labeled carbon dioxide in the patient's breath; the labeled compound may be found to be metabolized normally, too fast, or too slow in the GI tract.

breath test

Gastroenterology
Any of a number of clinical tests used to evaluate malabsorption, in which a food containing a substance emitting low levels of radioactivity is ingested and, if malabsorbed, is exhaled through the lungs.

Lab medicine
The testing of the gases exhaled from a patient for the presence of volatile organic compounds (VOCs).

breath test

Chest medicine Any of a number of clinical tests used to evaluate malabsorption, in which a food containing a substance emitting low levels of radioactivity is ingested and, if malabsorbed, is exhaled through the lungs. See 2H-lactose test, 14C-xylose test GI disease See Urea breath test Lab medicine The testing of gases exhaled from a Pt for the presence of volatile organic compounds–VOCs.

breath test

(breth test)
1. Any diagnostic procedure in which endogenous or exogenous materials are measured in samples of breath as a means of identifying pathologic processes (e.g., hydrogen breath testing for lactose intolerance, urea breath testing to detect gastric colonization with Helicobacter pylori).
2. A test to measure alcohol consumption.

breath test

(breth test)
Any diagnostic test in which endogenous or exogenous materials are measured in samples of breath as a means of identifying pathologic processes.
References in periodicals archive ?
The breath-testing machines have three levels - green, amber and red.
Ministers have previously rejected random breath-testing, but it is understood that there was a change of heart when the results of the latest Christmas campaign against drink-driving were revealed.
A NEW breath-testing device fitted to cars could be brought in to stop drink-drivers.
THE Labour Party spokesman on transport, Deputy Roisin Shortall, has criticised the govern-ment's continued failure to introduce random breath-testing for motorists while introducing the same measure for Train drivers.
Only North Wales has upped its breath-testing of drivers with a 47% increase.
25 am yesterday and, after breath-testing him, took him to Heathrow police station.
HUNDREDS of jailed drink-drivers may be allowed to appeal after a sheriff gave a vote of no confidence to police breath-testing methods.
Students said a considerable number of juniors and seniors have boycotted the dances entirely since breath-testing was introduced in the fall of 1995.