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Table 1. Diagnostic Criteria for Overt Diabetes and
Gestational Diabetes at the First Prenatal Visit
(Before 13 Weeks Gestation or As Soon As Possible
Thereafter) for Those Women Not Known to Already
Have Diabetes
a
Diagnosis
Fasting Plasma
Glucose,
b
mg/dL
(mmol/L)
Untimed (Random)
Plasma Glucose,
b
mg/dL (mmol/L) HbA1c,
c
%
Overt diabetes
(type 1, type 2, or
other)
≥126 (≥7.0) ≥200 (≥11.1) ≥6.5
Gestational diabetes 92-125 (5.1-6.9) NA NA
NA, not applicable.
a
ese criteria for the diagnosis of overt diabetes in early pregnancy are congruent with those of the
ADA and differ somewhat from those of the IADPSG.
b
Testing should use plasma glucose analyzed at a laboratory, not capillary blood glucose analyzed with
a blood glucose meter.
c
Performed using a method that is certified by the NGSP and standardized to the DCCT
reference assay.
Table 2. Diagnostic Criteria for Overt Diabetes and
Gestational Diabetes Using a 2-Hour 75-g OGTT at
24-28 Weeks Gestation
a
Diagnosis
Fasting Plasma
Glucose,
b
mg/dL (mmol/L)
1-h Value,
mg/dL (mmol/L)
2-h Value,
mg/dL (mmol/L)
Overt diabetes (type 1,
type 2, or other)
≥126 (≥7.0) NA ≥200 (≥11.1)
Gestational diabetes 92-125 (5.1-6.9) ≥180 (≥10.0) 153-199 (8.5-11.0)
NA, not applicable.
a
ese criteria for diagnosing overt diabetes based on the results of the 24-28-week glucose tolerance
test differ somewhat from those of the ADA and the IADPSG.
b
Testing should use plasma glucose analyzed at a laboratory, not capillary blood glucose analyzed
with a blood glucose meter.
