Who can inject
MD, DO, NP, PA, RN under physician delegation/supervision
Registered nurses (RNs)
Yes, RN may inject under physician delegation and supervision
Nurse practitioners & physician assistants
NP/PA may inject under physician collaboration; independent practice limited
The exam that makes it legal
Required; in-person exam before treatment A valid order or good-faith exam by an authorized provider is what makes an injection lawful — not simply who holds the syringe.
Training expected
No state-mandated injector training beyond licensure.
What to verify in Tennessee
Ensure a physician medical director is formally designated and that all delegation agreements comply with TN Medical Board and Board of Nursing standards.
Primary source: TN Medical Board, TN Board of Nursing
General business information for Tennessee medical-spa owners, current as of 2026 — not legal advice. State boards update rules often; confirm specifics with the Tennessee board (and your own counsel) before you act.