breath tests


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breath tests

diagnostic tests for intestinal disorders such as bacterial overgrowth, ileal disease, lactase deficiency, and steatorrhea. Lactose malabsorption is treated by giving the patient 12.5 to 25.0 grams of lactose and measuring the amount of hydrogen excreted in the breath. If lactose absorption is impaired in the small intestine, colonic bacteria ferment the lactose, releasing hydrogen, which is excreted in the breath. Bacterial overgrowth is tested with 14C-cholylglycine, which is normally absorbed by the ileum and recycled via the enterohepatic circulation. In cases of bacterial overgrowth the labeled glycine is removed by conjugation in the small intestine, absorbed, and metabolized, resulting in an increase of 14CO2 in the breath. Breath tests are also used to test for the presence of Helicobacter pylori.
References in periodicals archive ?
Late last week, the Worcester district attorney's office suspended the use of breath tests, as did some other prosecutors, because of the reported problems.
The man, who has been charged and will appear before Prestatyn Magistrates Court later, provided a breath test reading of 129 milligrammes of alcohol per 100 millilitres of breath - the legal limit being 35.
With this vast chemical potpourri traveling through the lungs, breath tests won't work unless scientists can tease out molecules that are biologically significant from those that aren't.
Overall 2,874 breath tests were carried out across the West Mercia and Warwickshire area.
Should you wish to consider any challenge of the breath test procedure, it would be advisable to take legal advice on this offence from a specialist motoring solicitor to mount the best possible defence.
Stipendiary steward Tony McGlone said: "Michael failed his first breath test and then was asked to take another one 15 minutes later.
John Penman, prosecuting, said: "He told the officer, 'I suffer from a medical illness and I will not be able to give a breath test - I do apologise'.
Fewer than 47,000 breath tests were carried out in each of March and April 2009.
Only 47,000 breath tests were carried out in March as well as April, compared to 189,935 in December.
Menssana Research is currently developing breath tests for several other diseases, including lung cancer, breast cancer, and ischemic heart disease.
MORE breath tests were carried out in North Wales this year as part of the police summer drink driving crackdown - but fewer arrests were made.
Thirty-two states and the District of Columbia allow forced blood or breath tests if the offender is involved in an accident that causes serious injury or death.