California Registered Dental Assistant (RDA) Written Practice Exam

To limit contamination, single-dose injectable medication should be

1. Used for multiple patients if not expired

2. Discarded after each use including leftover contents

3. Stored for up to one week after opening

4. Refilled for future use

The correct answer is: Discarded after each use including leftover contents

A is incorrect because single-dose injectable medication should only be used for a single patient to prevent contamination and transmission of infections. Using it for multiple patients increases the risk of spreading harmful germs. C is incorrect because once opened, single-dose injectable medication should be used immediately. Storing it for up to one week can lead to contamination and loss of potency. D is incorrect because single-dose injectable medication should never be refilled for future use. Doing so can introduce contaminants and compromise the safety and effectiveness of the medication. Therefore, any leftover contents should be discarded after each use.