Because it does not carry specific microorganisms, it will not affect the experiment. Spf animals refer to animals without specific microorganisms and parasites. Internationally recognized standard laboratory animals should not carry microorganisms, otherwise, these microorganisms will affect the experimental results and process when doing experiments. Therefore, spf animals are internationally recognized standard experimental animals.

When using spf animals to do experiments, experimenters and staff must pass the professional training courses for experimental animal practitioners and obtain the examination certificate of experimental animal practitioners before they can take up their posts.