S = Susceptible; I = Intermediate; R = Resistant
a. Susceptibility interpretive criteria are based on a dose of 6 grams fosfomycin every 8 hours by intravenous infusion over 1 hour in patients with an estimated creatinine clearance of 50 mL/min.
b. For disk diffusion, use paper disks impregnated with 200 mcg fosfomycin supplemented with 50 mcg of glucose-6-phosphate.



