Which statement accurately describes multi-dose vial usage?

• A. They are intended for one patient only
• B. They must be discarded after 24 hours
• C. They are used more than once on more than one patient
• D. They should be stored at very cold temperatures

Answer: (C)

Multi-dose vials are designed for multiple uses across patients, as long as sterile technique is maintained and the vial remains uncontaminated and within its approved storage and shelf life. This is why the statement that they can be used more than once on more than one patient is correct: the vial can serve several patients if the medication is drawn with aseptic technique, a new sterile syringe and needle are used for each withdrawal, the stopper is cleaned, and the vial is not expired or compromised.

The other ideas don’t fit the concept: a multi-dose vial is not limited to a single patient, so saying it’s for one patient is incorrect; there isn’t a universal 24-hour discard rule for all multi-dose vials—discard timing depends on the drug and policy; storage temperature is dictated by the medication’s requirements, not a general rule about all multi-dose vials.