[Plasma levels of cyclosporin 6 hours after its oral administration, T6: key to the surveillance of the treatment].

Clinical evolution and CsA monitoring of 65 transplanted patients (55 kidneys and 10 kidneys and pancreas) treated with CsA were analysed, retrospectively (45 patients) and prospectively (34 patients). The aim of the study was: To show that nephrotoxicity is not uncommon with low trough plasma levels of CsA, and to indicate the value of CsA pharmacokinetic studies in individual cases. To suggest that the T6 value of a CsA pharmacokinetic plasma curve (6 hours after oral drug administration) is a valid expression of a full pharmacokinetics study.