Medications that Modify Serum Creatinine
Because serum creatinine undergoes tubular secretion, any medications that interfere with this process will falsely elevate the patient’s serum creatinine; however, this will not impact the patient’s true GFR. The following medications have been shown to falsely elevate serum creatinine:
Cefoxitin
Cimetidine
Cisplatin
Flucytosine
Trimethoprim