Which of the Following Describes the Correct Procedure for an Allen

Multiple Choice

Which of the following describes the correct procedure for an Allen test?

A) Compress both the radial and ulnar arteries, and then release the radial artery.
B) Compress both the radial and ulnar arteries, and then release the ulnar artery.
C) Compress both the radial and ulnar arteries, and then release both arteries at once.
D) Compress the brachial artery only and observe circulation to the hand.