Background: End-Stage Renal Disease (ESRD) is a global health problem due to increasing its burden worldwide. High-risk groups include family members of patients with ESRD. Objectives: To determine the prevalence of ESRD among dialysis patients' families. At Al-Shat kidney dialysis Center, Tripoli, Libya. So can conclude that the ESRD patient is an index case for a high- risk population. Methods: All patients' data were collected through direct interview with the patients for 15- 20 minutes and by reviewing patients' charts. Patients who decline consent to participate and those with mental or speech disability were excluded, and patients on peritoneal dialysis. The study carried at Al-Shat kidney dialysis centre, Tripoli, Libya. In January 2019. Results: 261 patients were interviewed, mean age 51.8 years (±15), nearly half (48.7%) of them, between 45 to 65 years and 31.8% younger than 45 years. 56.3% were men, and 43.7% were women. The leading causes of ESRD in these patients were DM, HTN, congenital abnormalities (APCKD/VUR) and GN (35.2%, 22.2%, 10%, 8%). Positive family history of ESRD was reportedby 26.8% of these patients. From them, 47% (33/70) were between 45 to 65 years ofage. 58.6% were male (41/70). 34.3% have diabetic, 20% have HTN, 13%have congenital abnormalities, and 7% GN. Conclusions: Positive familyhistory of ESRD was high in dialysis patients. These patients can be used as anindex case to identify high- risk population.