In a healthy horse, CRT returns to normal within how many seconds?

• A. 3-4 seconds
• B. 1-2 seconds
• C. 0.5-1 seconds
• D. 5-7 seconds

Answer: (B)

Capillary refill time (CRT) is a quick measure of peripheral perfusion. In a healthy horse, the mucous membranes (usually the gums or lip mucosa) should blanch when pressed and return to normal color within about 1–2 seconds. This rapid refill indicates good blood flow to the capillaries. If the refill takes longer than about 2 seconds, it can suggest dehydration, circulatory compromise, or shock, though factors like cold environment or recent strenuous exercise can slow CRT temporarily. Use a consistent site and environment when assessing, and interpret CRT alongside other clinical signs rather than in isolation.