Is it normal for menstraul blood to be black on your pad?

	Asked by Unregistered (Female; 23 ) on Wed 30, Jul 2008 07:46pm :
	Is it normal for a women to have black menstrual blood on her pad instead of read or is this an infection?
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	Answer by Dr Paul S, MD (doctor) on Wed 30, Jul 2008 10:45pm: Hi there. Blood color is red if it still carries the oxygen that it is supposed to deliver to the tissues. Blood will turn dark red or even black if this is already low or devoid of oxygen. Menstrual blood is a mixture of both oxygenated and deoxygenated blood, and it is indeed possible to have deoxygenated blood seen as black blood during menses. This black blood may also be blood that has been in the cervix or vaginal tract for at least 48 hours, loosing all its oxygen content, and even undergo some degree of coagulation (appearing as globs). If you have other symptoms such as vaginal pain, fever, different smell of the discharge, or when menses is unusually long or heavy, then you may have to see your gynecologist. Regards.
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