Coagulation typically occurs in 15 minutes, reports HowStuffWorks. Inside blood are cells called platelets that, combined with proteins, stop blood from flowing. Many factors, such as diseases, disorders, and medications, can impact the amount of time it takes for blood to clot.
There are 13 different clotting factors involved in blood coagulation, according to the National Hemophilia Foundation. If there is a deficiency in production, or if the body produces a defective form, then an individual may develop a bleeding disorder. Depending on how extreme the condition is, the disorder can cause mild symptoms such as nosebleeds to severe symptoms such as internal bleeding. Medications, such as aspirin, heparin and warfarin, in the bloodstream also impact coagulation.