Fig. 3
From: Saliva for assessing creatinine, uric acid, and potassium in nephropathic patients
Association between saliva potassium and plasma potassium. Left panel: individual values and regression line of plasma potassium over saliva potassium in 15 controls and 35 CKD patients (open circles and closed circles, respectively). The insert reports equation and coefficients with 95%CI in CKD patients. The dotted grey line indicates the detection limit of the assay for saliva uric acid. Right panel: individual values of pre-dialysis values of plasma potassium and saliva potassium over post-dialysis values of plasma potassium and saliva potassium in 7 dialysis patients (pre-dialysis: closed squares; post-dialysis: open squares)