A client is scheduled to have a prick test to determine what specific allergens are creating problems for the client. What should the nurse inform the client is involved with the testing?
A) A concentrated form of the substance is applied to the skin and covered with an occlusive dressing for 48 hours and then examined.
B) A dilute solution of an antigen is injected intradermal and observed for a wheal.
C) The skin will be scratched, and applying a small amount of the liquid test antigen to the scratch, usually on the back.
D) The client will taste several different possible antigens and observe for wheals.
C
Feedback:
The scratch or prick test involves scratching the skin and applying a small amount of the liquid test antigen to the scratch. The tester applies one allergen per scratch over the client's forearm, upper arm, or back. The back is more sensitive than the arm. Results of the test are identifiable in as little as 20 minutes. If a raised wheal with localized erythema appears, the tester measures its length and width and width in millimeters. Distractor A is the patch test, and B is the intradermal injection test. The client does not taste in any of the skin tests.
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