Capillary Refill Test: A Simple yet Effective Measure for Blood circulation The capillary refill test (CRT) is a quick and non-invasive assessment tool used to evaluate blood circulation and hydration status. Here’s how it works: 1. Press on a fingernail or toenail bed for a few seconds to blanch the skin 💅. 2. Release the pressure and observe the time it takes for the skin to return to its normal color ⏱️. 3. A normal capillary refill time is usually less than 2-3 seconds ⏱️. What does it indi