Coronavirus (COVID-19)

What to expect when visiting a Mercyhealth location Mercyhealth has resumed in-person patient visits. At this time, you can schedule an appointment to meet with your physician at the clinic, or if... continue reading

Health Library


Return to Index

Diagnosis of Type 1 Diabetes

The doctor will ask about your symptoms and health history. An exam will be done. These blood tests may be done:

Random Plasma Glucose Test

This test is taken at a random time, without regard to when food was last eaten. A sample of blood will be taken. The glucose level will be measured. A measure of 200 (mg/dl) [11.1 mmol/L] or higher is a sign of diabetes.

Two-hour Glucose Tolerance Test

This test is done after a fast of 8 to 16 hours. It is often done in the morning.
A blood sample will be taken to measure glucose levels. Then, a drink that has 75 grams of glucose will be given. Two hours later, another sample will be taken. In a person with diabetes, the glucose level will rise higher than normal and stay high for a much longer time. A measure of 200 mg/dl (7 mmol/L) or above at two hours is a sign of diabetes.

Hemoglobin A1c (HbA1c)

The HbA1c test measures blood glucose levels over the past 2 to 4 months. A fast is not needed before the test. A sample of blood will be taken. An HBA1c level of 6.5% or higher is a sign of diabetes.

Fasting Plasma Glucose Test

This test is done after a fast of at least 8 hours. A sample of blood will be taken to measure glucose levels. A measure of 126 milligrams per deciliter (mg/dl) (7 millimole per liter of blood [mmol/L]) or higher is a sign of diabetes.

References

American Diabetes Association. Standards of medical care in diabetes-2019. Diabetes Care. 2019. Jan; 42 (Suppl 1):S1-193.
Diabetes mellitus type 1. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/diabetes-mellitus-type-1-34 . Updated June 28, 2019. Accessed November 22, 2019.
Type 1 diabetes. American Diabetes Association website. Available at: https://www.diabetes.org/diabetes/type-1. Accessed November 22, 2019.

Revision Information

  • Reviewer: EBSCO Medical Review Board James P. Cornell, MD
  • Review Date: 09/2019
  • Update Date: 11/25/2019
Mercyhealth MyChart Sign In
is the if statement working?



Array
(
    [Test] => test
    [Last_Active] => 1594408860
)