A jugular bleeding technique in rabbits.

When studying pharmacokinetics in rabbits, researchers must often take multiple blood samples from conscious rabbits. Researchers usually collect these samples via the auricular vein, typically through a port or an indwelling catheter. The authors have developed an easy and efficient alternative method for obtaining multiple blood samples from conscious rabbits via the external jugular vein.

Influence of Blood Collection Sites on Plasma Glucose and Insulin Concentration in Conscious C57BL/6 Mice.

Blood collection from conscious, unanesthetized mice is often performed during the drug development process. The site of collection may influence the parameter(s) of interest. To investigate the potential influence of collection site on plasma glucose and insulin, a study was conducted to compare plasma glucose and insulin concentrations in blood samples collected without anesthesia from the retroorbital sinus versus the tail vein in 10- to 12-week-old female C57BL/6 mice.