This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Obs), Subject name: Gynaecology & Obstetrics
Menorrhagia ('heavy periods') is defined as a blood loss of greater than: 
Select and explain. 
A. 35 mL per period, B. 55 mL per period, C. 80 mL per period, D. 120 mL per period
C: 80 mL per period
Answer: C: 80 mL per period 
Explanation: Ans. C. 80mL per period* Menorrhagia ('heavy periods') is defined as a blood loss of greater than 80 mL per period.* This definition is rather arbitrary but represents the level of blood loss at which a fall in hemoglobins and hematocrit concentration commonly occurs.