Most people lose 20–90 mL (1–5 tablespoons) of blood across a full period, with the heaviest flow often landing in the first two days.

Spotting is usually just a few drops or a light smear that doesn’t fill a pad or tampon.

Most people lose about 500 mL after vaginal birth and about 1,000 mL after cesarean, with care teams watching for heavier bleeding.

Most periods shed about 30–40 mL of blood, with more total fluid loss because it mixes with uterine tissue and mucus.

Most people lose about 30–40 mL of menstrual blood per cycle, and loss above 80 mL is often treated as heavy bleeding.

Most adults carry around 4.5–6 liters of blood, with the total shifting mainly with body size, sex, age, and pregnancy status.

Most people lose 30–80 mL of menstrual fluid per period, and only part of that fluid is blood.

Heavy menstrual bleeding is often described as 80 mL or more per cycle, yet real-life signs like flooding and frequent soaked changes tell the story faster.

Most adults carry about 4.5–5.5 liters (9–12 pints) of blood, with body size, sex, pregnancy, and body fat shifting the total.

Most adults carry roughly 4.5–6 liters of blood, with the total shifting with body size, sex, hydration, and life stage.