- Creatinine ≤ 1,25x ULN or creatinin-clearance > 50 ml/min (according to Cockroft Gault). Urine dipstick for proteinuria <2+. Patients discovered to have ≥2+ proteinuria on dipstick urinalysis should undergo a 24 hour urine collection and must demonstrate ≤1 g of protein in 24 hours