because we have found that chromogranin a is elevated in secondary ( uremic ) hyperparathyroidism , we systematically investigated the influence of renal dysfunction and its attendant hyperparathyroidism on chromogranin a in several subject groups : normal controls ( serum creatinine less than or equal to 1.2 mg/dl ) , nonazotemic renal transplant recipients , nonazotemic subjects with glomerular disease ( serum creatinine between 1.2 and 2 mg/dl ) , mid-range renal disease subjects ( serum creatinine between 2 and 7.5 mg/dl ) , and end-stage renal disease subjects ( serum creatinine greater than 7.5 mg/dl ) .
C0022646
renal
C0268731
glomerular disease