Mrs Kerswell, a retired scientist, said she was telephoned by the surgery in October saying her kidney condition demanded an urgent urine test.
Although the anti-drug policy's enacted in '04 and '05 helped out, many players switch to human growth hormone, which does not show up in a urine test.
You don't need to get a urine test to tell you that if you smoke a pack of cigarettes a day, you are at increased risk for lung cancer.
Although this method is considered the gold standard for estimating sodium intake, that lone urine test may not provide an accurate snapshot of the participants' everyday intake over the full eight-year study, as the researchers themselves note.
They test a patient's urine for metals, give a chelating agent, then test the urine again to see if it has more metal.
They also test urine to see whether it matches the patient's medication history.
Sugar can be measured in the urine through a lab test commonly called a urinalysis.
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"I am asking that the Italian Olympic Committee carry out a DNA test on the urine, as they might have made a mistake, " he said.
Beyond the usual tests, CHLI charts all sorts of extra parameters including three measures of arterial inflammation and an experimental test that looks in my urine for DNA damage.
The long awaited drug test on Floyd Landis' backup urine sample begins today in a French lab.
The staff there performed a "challenge test" to see if Stemp's urine was positive for heavy metals.
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