What is the reference range for oral glucose tolerance in glucose tolerance testing?

Updated: May 10, 2021
  • Author: Jiun-Lih Jerry Lin, MBBS, MS(Orth); Chief Editor: Eric B Staros, MD  more...
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Answer

Answer

Table 3. Reference Range for Oral Glucose Tolerance Test [2, 3] (Open Table in a new window)

 

Fasting

2-Hour

Normal

< 5.5 mmol/L

< 7.8 mmol/L

< 110 mg/dL

< 140 mg/dL

Impaired glucose tolerance

5.5-6.9 mmol/L

7.8-11 mmol/L

110-126 mg/dL

140-200 mg/dL

Diabetes

>7 mmol/L

>11.1 mmol/L

>126 mg/dL

>200 mg/dL