46.61.508
Liability of medical personnel withdrawing blood.

No physician, registered nurse, qualified technician, or hospital, or duly licensed clinical laboratory employing or utilizing services of such physician, registered nurse, or qualified technician, shall incur any civil or criminal liability as a result of the act of withdrawing blood from any person when directed by a law enforcement officer to do so for the purpose of a blood test under the provisions of RCW 46.20.308, as now or hereafter amended: PROVIDED, That nothing in this section shall relieve any physician, registered nurse, qualified technician, or hospital or duly licensed clinical laboratory from civil liability arising from the use of improper procedures or failing to exercise the required standard of care.