When to worry about blood test results

I reassured him and sent him to get another blood specimen drawn without a tourniquet. Why? Because I suspected that the ...
Reuters

Blood in the urine? Check with a microscope

NEW YORK (Reuters Health) - When a dipstick test suggests there's blood in the urine, the next step should be to examine a sample of the urine under a microscope to make sure the dipstick result is ...