Pharmacokinetics of bleomycin after im administration in man.

The pharmacokinetics of bleomycin were studied after im injection in patients with malignant lymphoma. Mean peak serum concentrations of 0.133, 0.326, and 0.587 milliunits/ml were obtained approximately 1 hour after injection of 2, 5, and 10 units/m2, respectively. The mean half-life was 155 minutes, with a range of 65--235 minutes. Thirty-three percent of the administered dose was recovered in the urine after 4 hours. The urinary excretion of bleomycin was 61% during the 24 hours after injection, with some variability that was not explained by differences in dose or creatinine clearance.