NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareEasy
A medical assistant is preparing to collect a sputum specimen from a patient for tuberculosis (TB) testing. Which of the following instructions should the MA provide to the patient?
- ASpit directly into the container without coughing deeply.
- BCollect the specimen immediately after eating breakfast.
- CRinse your mouth with an antiseptic mouthwash before collecting.
- DCollect the specimen first thing in the morning upon waking.
Show answer & explanationAnswer & explanation
Correct answer: D. Collect the specimen first thing in the morning upon waking.
Collecting a sputum specimen first thing in the morning ensures the highest concentration of organisms, as secretions accumulate overnight, making it the most diagnostic sample for TB testing.
Why the other options are wrong
- A. A deep cough is essential to produce sputum from the lungs, not just saliva, which is needed for accurate TB testing.
- B. Eating breakfast can dilute the specimen and introduce food particles, making it less ideal for diagnostic testing.
- C. Antiseptic mouthwash can kill or inhibit the growth of bacteria, potentially leading to false-negative results for bacterial cultures.
Sputum Specimen Collection
Sputum collection involves obtaining a deep cough specimen from the lungs, typically in the morning, for diagnostic testing of respiratory infections.
- First morning specimen is preferred.
- Requires a deep cough, not just saliva.
- Avoid eating, drinking, or using mouthwash beforehand.
Memory trick: Morning's Mucus Most Meaningful