NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareMedium
A medical assistant is preparing to perform a purified protein derivative (PPD) test. Which of the following sites is the most appropriate for this injection?
- ASubcutaneous tissue of the abdomen
- BInner surface of the forearm
- CDeltoid muscle
- DVastus lateralis muscle
Show answer & explanationAnswer & explanation
Correct answer: B. Inner surface of the forearm
The PPD test is an intradermal injection, meaning it is administered into the dermis layer of the skin. The inner surface of the forearm is the preferred site due to its thinner, less pigmented skin, which allows for easier visualization of the injection and subsequent reaction.
Why the other options are wrong
- A. The subcutaneous tissue of the abdomen is a subcutaneous injection site, not intradermal.
- C. The deltoid muscle is an intramuscular injection site, not intradermal.
- D. The vastus lateralis muscle is an intramuscular injection site, not intradermal.
PPD Injection Site
The specific anatomical location used for administering a Purified Protein Derivative (PPD) test.
- Inner forearm.
- Intradermal injection.
- Allows for clear visualization.
Memory trick: PPD: Place Precisely Dermis, Forearm's Finest Flat.