Medical Health Encyclopedia

Injury Disease Nutrition Poison Symptoms Surgery Test Special Topic

1 2 5 A B C D E F G H I J K L M N O P Q R S T U V W X

Urine sample Fasting glucose tolerance test Oral glucose tolerance test

Overview Risks Results

Glucose tolerance test

Alternative Names: Oral glucose tolerance test Normal Values: For a 75-gram oral glucose tolerance test used to check for type 2 diabetes, normal (nondiabetic) blood values are: fasting: 60 to 110 mg/dL 1 hour: less than 200 mg/dL 2 hours: less than 140 mg/dL. Between 140-200 mg/dL is considered impaired glucose tolerance or pre-diabetes. This group is at increased risk for developing diabetes. Greater than 200 mg/dL is diagnostic of diabetes mellitus Text Continues Below For a 50-gram oral glucose tolerance test used to screen for gestational diabetes, normal blood values at 1 hour are less than 140 mg/dL. For a 100-gram oral glucose tolerance test used to screen for gestational diabetes, normal blood values are: fasting: less than 95 mg/dL 1 hour: less than 180 mg/dL 2 hour: less than 155 mg/dL 3 hour: less than 140 mg/dL Note: mg/dL = milligrams per deciliter What abnormal results mean: Greater than normal levels of glucose may indicate Diabetes Gestational diabetes High glucose levels may be related to another clinical problem (for example, Cushing's syndrome).

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.