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

Add Yahoo as a preferred source to see more of our stories on Google. Pathology analyzes bodily fluids and tissues using a variety of methods. Alvaro Lavin/Moment via Getty Images Medical laboratory ...

If you’ve ever wondered why your doctor asks you to do a blood test or provide a urine sample at your annual checkup even if ...