What value falls within the range of the total blood volume for adult mice?

• A. 0.8 ml
• B. 1.2 ml
• C. 2.0 ml
• D. 3.5 ml

Answer: (B)

Blood volume in adult mice is a fraction of their body weight, typically about 6–8%. That means a mouse around 25 g would have roughly 1.5–2.0 mL of blood. Given this range, values around 1.0–2.0 mL are considered normal, while a bit above or below these numbers is still plausible depending on the individual. A value like 1.2 mL falls squarely inside that usual range, making it a reasonable answer. A value of 0.8 mL is a touch low for an adult mouse, 2.0 mL sits at the upper end of the range, and 3.5 mL would be well above what a healthy adult mouse typically contains.