Glucose challenge test threshold values in screening for gestational diabetes among black women.

Publication/Presentation Date

5-1-2006

Abstract

OBJECTIVE: The objective of the study was to assess the incidence of gestational diabetes among black women according to various cut-off values of the glucose challenge test.

STUDY DESIGN: We performed a retrospective chart review of black patients who had a 50-g, 1-hour glucose challenge test between 24 and 28 weeks' gestation of 130 mg/dL or higher followed by a 100-g, 3-hour glucose tolerance test. Results were categorized in 10-mg/dL increments. Gestational diabetes was diagnosed by 2 or more abnormal values using the Carpenter-Coustan criteria.

RESULTS: The study included 387 patients. The incidence of gestational diabetes diagnosed overall in all patients with a glucose challenge test of 130 mg/dL or higher was 31.2%. The incidence of gestational diabetes in individuals with a challenge test in the range of 130 to 140 mg/dL was 10.7%. The incidence of gestational diabetes with a screening test of 180 mg/dL or higher was 72.0%.

CONCLUSION: Our data support the use of 130 mg/dL as the threshold for a positive glucose challenge test and suggest the use of a glucose tolerance test to confirm the diagnosis of gestational diabetes for screening values up to 200 mg/dL.

Volume

194

Issue

5

First Page

46

Last Page

48

ISSN

1097-6868

Disciplines

Medicine and Health Sciences

PubMedID

16647898

Department(s)

Department of Obstetrics and Gynecology

Document Type

Article

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