Blood serum is the sticky, watery liquid left after the solid parts of the blood (the red blood cells, white blood cells, and platelets) have clumped (coagulated).
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Specialist Medical Reviewer||W. David Colby IV, MSc, MD, FRCPC - Infectious Disease|
|Current as of||March 12, 2014|
WebMD Medical Reference from Healthwise