EVALUATION OF OGTT THRESHOLD USED IN DIAGNOSIS OF GESTATIONAL DIABETES.

Introduction: Gestational diabetes (GDM) is known as pregnancy diabetes. A twostage test is used in our hospital for the investigation of GDM. The first step is a 50 g glucose screening test. If serum glucose level is ≥140 mg/dl after 1 hour, we doubt diabetes. And the second step, 100 g glucose scan test. In this study, we were aimed to investigate that, what kind of changes might occur if the threshold value of 140 mg/dl is taken to 130 mg/dl in the GDM screening test performed in our hospital. Material and Methods: Patients screened for GDM between 01.01.2016 and 31.12.2016 were screened from the laboratory information system. GDM results of 784 patients were recorded. The mean age of the patients was 29.47(age; 17‐45). Results: 136 results were ≥140 mg/dl and in these patients the second stage was passed. 218 results ≥130 mg/dl and 82 results were found to be 130‐140 mg/dl. Discussion: If the limit was accepted as 140 mg/dl at first stage, 17.35% of the patients were found to be at risk. If the limit was accepted as 130 mg/dl, 27.80% of the pregnancies would be at risk. There is a high difference between the two limits. This may cause some GDM patients to be skipped. Therefore, lowering the limit to 130 mg/dL can be discussed. [ABSTRACT FROM AUTHOR]