Describe how to calculate the total volume of blood that can be safely drawn from a small mammal

Obtain an accurate weight in grams just prior to a blood draw. The maximum amount of blood that can be drawn from a (healthy) small rodent can be calculated from an average base volume of 70 ml/kg of body weight. Conversions must be accurately calculated due to the small size of these animals. For chinchillas, the volume of blood drawn should not exceed 0.5 ml/100g.