What is the capillary refill time on a healthy animal?

Capillary refill time (CRT) is a quick test used to assess peripheral perfusion and circulatory status in an animal. In healthy animals, the normal capillary refill time typically falls within two seconds or less. When a veterinarian checks CRT, they apply pressure to the gums or another area with a good blood supply until the area turns white and then release it to see how quickly the color returns. The rapid return of color indicates adequate blood flow and oxygen delivery to the tissues.

A CRT of two seconds or less signifies that the animal has good hydration status and proper cardiovascular function. If the CRT exceeds this timeframe, it may signal potential underlying health issues, such as dehydration, shock, or other circulatory disturbances. Therefore, understanding that two seconds is the standard threshold for healthy animals helps in evaluating their health status effectively.