Early Diagnosis of Acute Renal Failure by Urine Trehalase Levels.

Inclusion Criteria: * Being over the age of 18 and under the age of 65 * Having signed the BGOF form to be included in the study, * Being in ASA 1 or ASA 2 classification * Not having kidney failure or kidney disease * No history of single kidney or renal transplantation * Not using nephrotoxic drugs or agents before surgery * Renal function tests taken preoperatively should be within normal ranges. * No urinary tract infection or urinary problems (such as polyuria, oliguria or anuria) Exclusion Criteria: * Those under the age of 18 or over the age of 65 * Those who do not want to participate in the study * ASA 3 and above * Having previously received treatment for kidney disease - including kidney stones - * Having been previously diagnosed with acute or chronic renal failure * Having a single kidney or a history of renal transplantation * Using nephrotoxic drugs or agents (such as contrast material) before surgery * Kidney function tests taken preoperatively are not within normal ranges * Having a urinary tract infection or urinary problem (such as polyuria, oliguria or anuria) * Having a history of kidney stones, acute renal failure or chronic renal failure * Those with active infection or disease before surgery * They were determined as patients for whom consent was not obtained for the study.