(a) Medications brought by or with the patient on admission to the facility shall not be used unless the contents of the containers have been examined and positively identified after admission by the patient's physician or a pharmacist retained by the facility.

(b) The facility may use drugs transferred from other licensed health facilities or those drugs dispensed or obtained after admission from any licensed or governmental pharmacy and may accept the delivery of those drugs by any agent of the patient or pharmacy without the necessity of identification by a physician or pharmacist.