Carboplatin dose based on actual renal function vs. dose capping: no excess of hematotoxicity in treatment of seminoma stage I Background: Single-dose Carboplatin (C) AUC7 is an adjuvant treatment option in Seminoma stage I. Many of these patients have very good renal function and hence high absolute doses of C are frequently administered. Some experts and clinical guidelines recommend capping of C dose at Creatinine-Clearance (Crea-Cl) of 125 ml/min because of concerns of excessive toxicity.