Old blood: As the blood deteriorates it changes colors from bright red to burgundy to brown to yellow and sometimes to black. Black blood means that it has been sitting in a "closed" location for some time.
Answered 9/28/2016
5.6k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question