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Frequently Asked Questions (FAQs) about USP <797>

Is adding lidocaine to a unit dose syringe of 99mTc-sulfur colloid for lymphoscintigraphy exempt from USP <797>?

Is adding lidocaine to a unit dose syringe of 99mTc-sulfur colloid for lymphoscintigraphy exempt from USP <797>?

No, this is considered compounding under USP <797>. However, this addition can likely fall under the immediate-use exemption.

Similar to dilution with normal saline, addition of lidocaine, whether in a vial or in the syringe, is considered compounding under USP <797>. However, this can generally be performed under the immediate-use exemption. Remember that the key components of the immediate-use provisions are the avoidance of touch contamination and administration within 1 hour.

Disclaimer

These FAQs reflect the authors' views only. They have not been provided or endorsed by the USP Convention or the USP Expert Committee on Sterile Compounding, nor do they necessarily reflect the views of the authors' institutions, SNM, or any other entities. This document is provided for informational purposes only and is not intended as legal advice. It should not be used to replace the advice of your own legal counsel.