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. Author manuscript; available in PMC: 2024 Jan 25.
Published in final edited form as: Curr Epidemiol Rep. 2023 Sep 21;10(4):210–220. doi: 10.1007/s40471-023-00332-0

Fig. 1b.

Fig. 1b

The assessment of menstrual blood flow

The assessment of menstruation includes primarily clinical and research methods. These methods usually doen’t satisfy convenience and accuracy at the same time.

• * PBAC (pictorial blood loss assessment chart) is semi-quantitative with a scoring system accounting for the number and the degree of staining of of feminine hygiene products.