Electrolytes, urea and creatinine are major factor in the determining a healthy kidney performance. Renal impairment is one of the kidney stages that can alter the concentration of these electrolytes. This study was carried out in order to access the biochemical concentrations of urea, electrolytes and creatinine in patients with renal impairment attending Yobe state specialist hospital Damaturu. One hundred (100) blood samples were collected randomly from the patients. Automated chemistry analyzer (Selectra proS) was used for determination of urea and creatinine. For the determination of concentration of electrolytes in blood samples, electrolytes analyzer known as Ion selective electrolyte (ISE) was used. Electrolytes determined and compare with normal values includes: bicarbonate (HCO3-) 20-30 mmol/l, potassium (K+) 2.5-5.0 mmol/l, chloride (Cl-) 95-110 mmol/l, and sodium (Na+) 135-145 mmol/l. The results obtained was distributed into three (3) groups depending on the age categories; group 1 (1-30years), group 2 (31-60 years), and group 3(60-90 years). The gender ratio male to female patients examined was 52:48. Generally, the obtained result showed that females age 31-60 years are the most affected by the renal impairment, and this called for Government intervention in order to solve the causes of kidney impairment in the society.