Chronic renal disease (CRD) is a pathophysiologic process with multiple etiologies, resulting in the inexorable attrition of Nephron number and function and frequently leading to end-stage renal disease (ESRD). In turn, ESRD represents a clinical state or condition in which there has been an irreversible loss of endogenous renal function, of a degree sufficient to render the patient permanently dependent upon renal replacement therapy (dialysis of transplantation) in order to avoid life threatening uremia, reflecting a dysfunction of all organ systems as a result of untreated or under treated acute or chronic renal failure. The current study was involved 80 patients, the age range within 25-70 years, selected sample of patients who attend Iraqi center of kidney dialysis, Baghdad Teaching Hospital and Al-Yarmok Teaching Hospital. All the patient's body mass index [BMI] were measured serum anti diuretic hormone ADH was assessed using enzyme linked immunosorbent kit [Elisa] while urea, creatinine, albumin, hemoglobin were determined by spectrophotometer (PD-303), and sodium, potassium, chloride were determined by Electrolyte analyzer 9180.These patients were divided in two group B (40 patients) as pre dialysis with ESRD,  and group A (40) healthy control. Results showed non-significant elevations in ADH levels in the patient group compared with the control group, while highly significant increase in urea, creatinine and albumin levels in in the patient group compared with the control group, also highly significant decrease in hemoglobin comparing with the control group. Also, it was observed non-significant decrease in sodium, non-significant increase in potassium and highly significant increase in chloride when comparing with the control group.