• Technique
• Summary
• Resources and references
• Cardiac puncture sampling in other animals
• All blood sampling techniques in the guinea pig

Please read the general principles of blood sampling page before attempting any blood sampling procedure.

Technique

Cardiac puncture is a suitable technique to obtain a single, large, good quality sample from a euthanised guinea pig or a guinea pig under deep terminal anaesthesia if coagulation parameters, a separate arterial or venous sample or cardiac histology are not required. It is appropriate for all strains of guinea pig.

A sample of 1-25 ml of blood can be obtained depending on the size of the guinea pig and whether the heart is beating. Blood samples are taken from the heart, preferably the ventricle, either via a thoracotomy or the left side of the chest. Blood should be withdrawn slowly to prevent the heart collapsing.

Cardiac puncture should not be used if the peritoneum needs to be lavaged to harvest cells, as this technique can cause blood to escape into the peritoneal cavity.

Summary

Resources and references

• Parasuraman S, Raveendran R, & Kesavan R (2010). Blood sample collection in small laboratory animals. Journal of pharmacology & pharmacotherapeutics,1(2): 87
• Hoff J (2000). Methods of blood collection in the mouse. Lab Animal 29:10
• Morton DB, Jennings M, Buckwell A, Ewbank R, Godfrey C, Holgate B, Verschoyle R. (2001). Refining procedures for the administration of substances. Laboratory Animals, 35(1): 1-41

Cardiac puncture sampling in other animals

All blood sampling techniques in the guinea pig