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A member asked:
Lab tech told me not to have caffeine for entire day before routine lab work...why?
3 doctors weighed in across 3 answers
Dehydration: Rarely lab techs find it to hard to draw blood if someone is a little dehydrated ... So for most patients the caffeine is not restricted. I find that a patient like that is fine with extra water an hr before blood draws.
Answered 2/8/2014
4.5k views
Affects testing: Caffeine may affect some lab tests-for example, it can raise your blood sugar level, leading to false results.
Answered 2/8/2014
4.5k views
Depends on tests: Depending upon the type of tests, anything that may affect the results- sugar, fluids, certain types of supplements, caffeine, etc. You do not want the tests to be skewed or contaminated and result in false info or masked info.
Answered 2/8/2014
4.5k views
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