In medicine, a<unk>  is a biological<unk>  taken by sampling, that is, gathered matter of a medical patient's tissue, fluid, or other material derived from the patient used for<unk>  analysis to assist differential diagnosis or staging of a disease process. Common examples include throat swabs, sputum, urine, blood, surgical drain fluids, and tissue biopsies.
Laboratory specimen
Biological specimen
Clinical chemistry
Blood test
Microbiology
Safety syringe
Drug test
Mental status examination