Historically, physicians have used manual capillary refill measurements to help diagnose moderate to severe illnesses. In the future, these manual measurements may be aided by digital videography and modified oxygen saturation probes.1
Related Signs and Tests
Diagnostic Performance Characteristics
Capillary refill or the return of "pink" in the nail bed ooccurs within 2-3 seconds for normal skin perfusion.
Capillary refill or the return of "pink" in the nail bed is delayed greater than 3 seconds for poor skin perfusion.