Fig. 1
From: Saliva for assessing creatinine, uric acid, and potassium in nephropathic patients
Association between saliva creatinine and plasma creatinine. Left panel: individual values and regression line of plasma creatinine over saliva creatinine in 14 controls and 27 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 creatinine. Right panel: individual values of pre-dialysis values of plasma creatinine and saliva creatinine over post-dialysis values of plasma creatinine and saliva creatinine in 7 dialysis patients (pre-dialysis: closed squares; post-dialysis: open squares)