A condition in which individuals have higher levels of blood glucose but not as high as in diabetes is called as pre diabetes. They don’t often have symptoms.
People with pre-diabetics have impaired fasting glucose (IFG) or impaired glucose tolerance (IGT) or sometimes have both. The fasting plasma glucose test (FPG) and the oral glucose tolerance test (OGTT) are the two types of tests used to determine pre-diabetes. If the blood glucose level is found to be abnormal following the fasting plasma glucose test (FPG), then it is called as impaired fasting glucose (IFG) and if blood glucose level is abnormal following the oral glucose tolerance test (OGTT), the condition is termed as impaired glucose tolerance (IGT).
A person is said to be pre-diabetic if the fasting blood glucose level is between 100 and 125 mg/dl and a person is found to be diabetic if the blood glucose level rises to 126 mg/dl or above.
People who are diagnosed with pre-diabetes should be checked for type 2 diabetes for every 1-2 years.