Blood clots (fibrin clots) are the clumps that result when blood coagulates.
Update Date 1/22/2015
Updated by: Rita Nanda, MD, assistant professor of medicine, section of hematology/oncology, University of Chicago Medicine, Chicago, IL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.