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Most menstrual cups hold 15–35 mL, while larger cups can reach 40–50 mL when filled to the rim.

Most full-size period pads hold about 5–15 mL in day-to-day wear, while longer overnight pads often handle 15–30 mL before leaks become likely.

A “regular” tampon is built to absorb about 6–9 grams of test fluid, which often lines up with about 6–9 mL of menstrual flow.

Most adults carry around 4.5–5.5 liters of blood, with the total shifting with body size, pregnancy, and day-to-day fluid balance.

A female mosquito usually drinks about 1–10 microliters of blood per meal, with many species clustering near 3–5 microliters.

Most adults carry about 5 liters of blood, close to 7–8% of body weight.

An average adult carries around 5 liters of blood, with normal ranges running from about 4.5 to 6 liters based on body size.

Most adults carry about 4.5–5.5 liters of blood, and total volume rises with body size and pregnancy.

A typical adult heart moves about 7,000 liters (around 1,850 gallons) of blood in 24 hours, with the total shifting with body size and activity.

An adult heart moves about 7,500 liters (2,000 gallons) of blood in 24 hours at rest.