Allergy Testing Senior Airman Catherine Settles numbers a baby’s back to record which allergen will be applied for a skin prick test at U.S. Air Force Hospital Langley, Virginia. The allergy clinic also conducts skin patch and oral challenge tests to identify a patient’s allergies. Air Force photo by Airman 1st Class Austin Harvill SHARE IMAGE: Download Image: Full Size (0.2 MB) Tags: Science, Health, Airmen, Air Force, Military Children Photo By: Airman 1st Class Austin Harvill VIRIN: 180425-D-XT155-001.JPG Photo Gallery