Digit Blood Flow Test

Original Editor - Anas Mohamed Top Contributors - Anas Mohamed


Digit blood flow test is used to examine the blood circulation to the finger's.

This test also known as capillary refill test


Step1. Remove finger rings and nail polish.

Step2. Therapist compress the nail bed until it turns white and records time taken for color to return to the nail bed.

Step3. Normal time 3 seconds. when it takes longer positive sign indicates and arterial insufficiency suspected.

Step4. Always compare normal side of the hand or fingers.



  1. David J. Magee. Orthopedic Physical Assessment. 6th edition. Elsevier. 2014.
  1. Paramedics Course -Capillary Refill Time - Australian Paramedical College. Paramedical College. Available from: https://youtu.be/wqaOwFI0ikI
  2. Capillary Refill Test. Dr. Borst's Occupational Therapy Classroom. Available from: https://youtu.be/n--wFoZFklg