Back to Ask the Diabetes Team Ask the Diabetes Team

From Hagerstown, Maryland, USA:

My Ob/Gyn had me go for a 2 hour fasting gestational diabetes test in my 27th week of pregnancy. The results were 138 at 2 hours. I have found info on 1 hour and 3 hour but not 2 hour testing. My doctor considers this a high level and has recommended a 3 hour fasting test. Can you provide any information on the 2 hour test and normal/abnormal blood sugar level?


The standard screening test in the United States is a 50 gram, 1 hour glucose tolerance test. The cutoff value is between 130 and 140 mg/dl. I am not sure why your doctor ordered a 2 hour test for screening purposes.

The normal values on the three hour test are fasting: less than 105 mg/dl, 1 hour less than 190, 2 hour less than 165 and three hour less than 145.


Original posting 6 Jul 97


  Back to Ask the Diabetes Team Return to the Top of This Page

Last Updated: Tuesday April 06, 2010 15:08:54
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.

This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
By using this site, you agree to our Terms of Use, Legal Notice, and Privacy Policy.
© Children with Diabetes, Inc. 1995-2018. Comments and Feedback.