<prompt> Which of the following is not done before ABG?Allen testHeparin to rinse the syringFlexion of wristPoking the aery at 45 degrees angle  <response>: Done Before ABG Allen test: integrity of palmer arch. Heparin: to rinse the syringe Poking the aery at 45-degree angle. Extend wrist joint: Radial Aery tent. 