Figure 2. The relationship between patient survival and intrapatient variability in tacrolimus blood levels in kidney transplant patients.7 (Adapted, with permission from Wolters Kluwer, from Goodall DL, Willicombe M, McLean AG, et al. High intrapatient variability of tacrolimus levels and outpatient clinic nonattendance are associated with inferior outcomes in renal transplant patients. Transplant Direct 2017;3:e192)