What color and amount of menstruation are considered normal?

Patient's question:

No

Doctor's answer:

Normal menstrual bleeding should be between 20 to 60 milliliters, and anything over 80 milliliters is considered menorrhagia. Menstrual blood is different from regular blood. It is a mixed liquid consisting of blood, shed endometrial tissue, cervical mucus, and vaginal secretions. Therefore, menstrual blood appears darker, slightly viscous, and does not clot easily into blood clots. Upon closer inspection, small and thin fragments can be seen.