Inclusion Criteria:  -  Inclusion criteria for the cases :  200 Diabetic patients of 18 year and older (either type 1or 2) presented by AKI based on KIDIGO Definition & Staging. KDIGO definition of AKI: Increase in serum creatinine by ≥0.3 mg/dL (≥26.5 µmol/L) within 48 h, or Increase in serum creatinine to ≥1.5 times baseline that is known or presumed to have occurred within the prior 7 days, or Urine volume <0.5 mL/kg/h for 6 h.  KDIGO staging of AKI: (1) stage 1: Serum creatinine 1.5-1.9 × baseline or ≥0.3 mg/dL (≥26.5 µmol/L) increase / Urine output <0.5 mL/kg/h for 6-12 h (2) stage 2; Serum creatinine 2.0-2.9 × baseline / Urine output <0.5 mL/kg/h for ≥12 h (3) stage 3: Serum creatinine 3.0 × baseline, increase in serum creatinine to ≥4.0 mg/dL (≥353.6 µmol/L), initiation of renal replacement therapy, or, in patients <18 years, decrease in eGFR to <35 mL/min per 1.73 m2 / Urine output <0.3 mL/kg/h for ≥24 h or anuria for ≥12 h .  Inclusion criteria for matched controls 200 Diabetic patients of 18 year and older with no AKI (either type 1or 2)  Exclusion Criteria:  Exclusion criteria for cases and controls:  Non-Diabetic patients with AKI  Diabetic patients with:  HBS Ag, HCV, HIV Active Lupus Active Malignancy Acute or Chronic Liver Disease Acute poisoning