In a 3 kg rabbit, the maximum safe blood draw every two weeks is approximately 30 mL.

In a 3 kg rabbit, the maximum safe blood draw every two weeks is approximately 30 mL.

• A. 6 mL
• B. 15 mL
• C. 30 mL
• D. 60 mL

Answer: (C)

The main idea is using a weight-based limit to keep blood loss safe for rabbits. In many lab practices, a max of about 1% of body weight is taken on a sampling event, with roughly two weeks between draws to allow recovery. For a rabbit weighing 3 kg, 1% of body weight is 0.03 kg, which corresponds to about 30 mL of blood. So drawing roughly 30 mL and then waiting two weeks gives a balance between obtaining needed samples and maintaining the animal’s hemodynamic stability and red cell mass. Smaller volumes are more conservative but unnecessary if you’re following the 1% rule, while larger volumes risk hypovolemia or anemia if repeated before full recovery. In practice, this volume is typically collected via an appropriate vein (often jugular for larger draws) with careful monitoring of the rabbit’s condition.

The main idea is using a weight-based limit to keep blood loss safe for rabbits. In many lab practices, a max of about 1% of body weight is taken on a sampling event, with roughly two weeks between draws to allow recovery. For a rabbit weighing 3 kg, 1% of body weight is 0.03 kg, which corresponds to about 30 mL of blood. So drawing roughly 30 mL and then waiting two weeks gives a balance between obtaining needed samples and maintaining the animal’s hemodynamic stability and red cell mass. Smaller volumes are more conservative but unnecessary if you’re following the 1% rule, while larger volumes risk hypovolemia or anemia if repeated before full recovery. In practice, this volume is typically collected via an appropriate vein (often jugular for larger draws) with careful monitoring of the rabbit’s condition.