84. According to the manufacturer, vials of which of the following injectable medications are stable for a maximum of 42 days at room temperature?
Answer: D
Novolin vials are stable for a maximum of 42 days at room temperature.
Novolin, an insulin product, is specifically noted by the manufacturer to have a stability of up to 42 days when stored at room temperature, making it a critical medication for diabetes management.
A) Ceftriaxone
Ceftriaxone is known to have specific storage requirements that do not support a 42-day stability at room temperature. Typically, this medication requires refrigeration to maintain its efficacy and prevent degradation.
B) Testosterone
While testosterone can be stable for some time, it does not have a documented stability of 42 days at room temperature as specified by its manufacturer. Usually, testosterone preparations have different storage guidelines that do not align with this timeframe.
C) Phenylephrine
Phenylephrine, a vasoconstrictor, also does not match the stability criteria of 42 days at room temperature. The manufacturer’s guidelines indicate a shorter stability period for this medication under similar conditions.
D) Novolin
Novolin is explicitly stated by the manufacturer to remain stable for up to 42 days when stored at room temperature, making it the only option among the choices that meets this specific criterion.
Conclusion
Novolin is the only injectable medication listed that is confirmed to be stable for a maximum of 42 days at room temperature, according to the manufacturer's specifications. All other options either require refrigeration or have shorter stability periods, making them unsuitable in this context.