The key paragraph is: “Manufacturers have traditionally used saline or water to estimate the absorption of their products, even though menstrual blood is more

The key paragraph is: “Manufacturers have traditionally used saline or water to estimate the absorption of their products, even though menstrual blood is more viscous and includes blood cells, secretions and tissue from the shed endometrial lining, all of which affect how it is absorbed.” See discussion on Twitter: https://x.com/jasmineagolphin/status/1690911638851850241 https://x.com/jasmineagolphin/status/1690911638851850241