Brown or dark red blood has not had as long to oxidize as black blood and can.
What does it mean when your period blood is brownish red.
Like black blood brown or dark red is a sign of old blood and it may appear at the beginning or end of a period.
You may see dark red blood upon waking during your period or after you ve been lying down for a while.
Brown period blood is common at the beginning and end of your cycle when your flow is slower.
As your body sheds the uterine lining in the first few days of your cycle the blood is normally red.
Brown blood is usually present toward the end of your cycle.
Blood that stays in your body longer becomes oxidized and darkens in color.
The result is brownish.
The deep color may simply mean that the blood has been sitting in the uterus for a while but.