There are several tests that can be used to diagnose diabetes:
Fasting Plasma Glucose Test (FPG): This test measures blood glucose levels after the patient has fasted for at least 8 hours. Diabetes is indicated by a reading of 126 mg/dL or higher on two separate occasions.
Oral Glucose Tolerance Test (OGTT): This test involves drinking a sugary beverage and measuring blood glucose levels 2 hours later. Diabetes is indicated by a reading of 200 mg/dL or higher on two separate occasions.
Random Plasma Glucose Test: The Random Plasma Glucose Test measures blood glucose levels irrespective of the time of day or when the patient last ate. A reading of 200 mg/dL or higher, along with symptoms of diabetes, indicates the presence of the condition.
Haemoglobin A1c (HbA1c) Test: This test measures the average blood glucose levels over the past 2-3 months. Diabetes is indicated by a reading of 6.5% or higher.
In addition to these tests, the healthcare provider may also conduct a physical exam and ask questions about the patient’s medical history and symptoms to help diagnose diabetes