Physiology
The International Federation of Gynaecology and Obstetrics (FIGO) defines the parameters for normal uterine bleeding.
| Frequency: Days between cycles | ≥24 to ≤38 days |
| Duration: Duration of menses | ≤8 days |
| Regularity: Cycle variation dependent on age | ≤7 to 9 days |
| Flow Volume | Normal as determined by the patient |
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