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 Alcolock, or Alcohol Ignition Lock -with the ironic acronym of AIL - is a breath-testing device fitted to the ignition of a vehicle.
It is ironic that while the Dail was legislating in the Rail Safety Bill for random breath-testing of train drivers, the Minister for Transport, Martin Cullen was still dragging his feet on this key recommendation of the Road Safety Strategy" she said.
Parker's tested a range of the inexpensive devices, which are widely available online, at shops and markets, car boot sales and petrol stations, by breath-testing a driver just over the legal drink-drive limit and comparing the results to official police tests.
The analysis shows the rate of roadside breath-testing in 2004 was less than one person per 1,000 in Carlow, Kildare and parts of Dublin - compared to nearly eight in every 1,000 in Galway city and the West.
Kevin Clinton, head of the Royal Society for the Prevention of Accidents, said breath-testing so few drivers put lives at risk.
Dr Nielson will claim in the Supreme Court that a drink-driving charge against him should be dropped because mobile phones and Garda radios interfered with the breath-testing Intoximeter.
A drink-driver is blaming a DIY breath-testing kit for his downfall.