A trough gentamicin level of 1.2 mcg/mL is within the typical therapeutic range?

A trough gentamicin level of 1.2 mcg/mL is within the typical therapeutic range?

• A. Yes
• B. No
• C. Only for certain infections
• D. Not enough information

Answer: (A)

Trough levels for gentamicin are used to balance effectiveness with safety. The trough is the lowest concentration just before the next dose, and for aminoglycosides the aim is to keep this value well below a toxic threshold—typically under about 2 mcg/mL—to minimize nephrotoxicity and ototoxicity while still providing antimicrobial effect. A trough of 1.2 mcg/mL stays under that upper limit, so it falls within the commonly acceptable therapeutic range. Depending on the dosing strategy and infection site, some targets may be a bit lower, but 1.2 mcg/mL is still considered appropriate for many regimens.

Trough levels for gentamicin are used to balance effectiveness with safety. The trough is the lowest concentration just before the next dose, and for aminoglycosides the aim is to keep this value well below a toxic threshold—typically under about 2 mcg/mL—to minimize nephrotoxicity and ototoxicity while still providing antimicrobial effect. A trough of 1.2 mcg/mL stays under that upper limit, so it falls within the commonly acceptable therapeutic range. Depending on the dosing strategy and infection site, some targets may be a bit lower, but 1.2 mcg/mL is still considered appropriate for many regimens.