Diabetes is usually diagnosed one of the following ways:

1. Fasting plasma glucose (blood sugar) is 126 mg/dL or higher on a laboratory test
   OR
2. Plasma glucose (blood sugar) over 200 mg/dL at any time of day with symptoms of diabetes such as increased hunger, increased thirst, and increased urination symptoms
   OR
3. Plasma glucose (blood sugar) of 200 mg/dL or higher two hours after drinking a 75-g glucose beverage in the lab which is known as an oral glucose tolerance test (OGTT)

A diagnosis of diabetes may be confirmed by a repeat test on another day.

Pre-Diabetes Diagnosis
Pre-Diabetes is usually diagnosed one of the following ways:

1. Fasting plasma glucose (blood sugar) is betwen 100 and 125 mg/dL on a lab test (used to be called impaired fasting glucose)
   OR
2. Plasma glucose (blood sugar) is between 140 and 199 mg/dL two hours after drinking a 75-g glucose beverage (OGTT) in the lab (used to be called impaired glucose tolerance)

Initial screening/ Glucose Challenge test:

• Test usually done between the 24-28th weeks of pregnancy
• If plasma glucose (blood sugar) is over 140 mg/dL one hour after drinking 50-g glucose beverage in the lab, your physician may order a 3-hour oral glucose tolerance test (OGTT)

3-hour OGTT:
If two or more plasma glucose (sugar) levels are higher than the numbers below after drinking a 100-g glucose beverage in the lab, gestational diabetes is usually diagnosed:

• Fasting:   normal less than 95 mg/dL
• 1-hour:  normal less than 180 mg/dL
• 2-hour:   normal less than 155 mg/dL
• 3-hour:   normal less than 140 mg/dL