Editing Glucose tolerance test (section)

==Results==
* ''Fasting plasma glucose'' (measured before the OGTT begins) should be below 5.6&nbsp;mmol/L (100&nbsp;mg/dL). Fasting levels between 5.6 and 6.9&nbsp;mmol/L (100 and 125&nbsp;mg/dL) indicate prediabetes ("[[impaired fasting glucose]]"), and fasting levels repeatedly at or above 7.0&nbsp;mmol/L (>126&nbsp;mg/dL) are diagnostic of diabetes.<ref name=ADAstandards2020>{{cite journal |title=2. Classification and Diagnosis of Diabetes: Standards of Medical Care in Diabetes—2020 |journal=Diabetes Care |date=20 December 2019 |volume=43 |issue=Supplement 1 |pages=S14–S31 |doi=10.2337/dc20-S002 |pmid=31862745 |url=https://care.diabetesjournals.org/content/43/Supplement_1/S14 |access-date=26 February 2020|doi-access=free |author1=American Diabetes Association }}</ref>
* For a ''2 hour GTT'' with 75&nbsp;g intake, a glucose level below 7.8&nbsp;mmol/L (140&nbsp;mg/dL) is normal, whereas higher levels indicate [[hyperglycemia]]. Blood plasma glucose between 7.8&nbsp;mmol/L (140&nbsp;mg/dL) and 11.1&nbsp;mmol/L (200&nbsp;mg/dL) indicate "[[impaired glucose tolerance]]", and levels at or above 11.1&nbsp;mmol/L at 2 hours confirm a diagnosis of diabetes.<ref name=ADAstandards2020/>

For [[gestational diabetes]], the [[American College of Obstetricians and Gynecologists]] (ACOG) recommends a two-step procedure, wherein the first step is a 50&nbsp;g glucose dose.<ref name=ADAstandards2020/><ref>{{cite journal|date=February 2018|title=ACOG Practice Bulletin No. 190: Gestational Diabetes Mellitus|journal=Obstetrics & Gynecology|volume=131|issue=2|pages=e49–e64|doi=10.1097/AOG.0000000000002501|pmid=29370047|author1=Committee on Practice Bulletins—Obstetrics|s2cid=3395229 }}</ref> If after 1 hour the blood glucose level is more than 7.8&nbsp;mmol/L (140&nbsp;mg/dL),<ref name=ADAstandards2020/> it is followed by a 100&nbsp;g glucose dose.<ref name=ADAstandards2020/> The diagnosis of gestational diabetes is then defined by a blood glucose level meeting or exceeding the cutoff values on at least two intervals,<ref name=ADAstandards2020/> with cutoffs as follows:<ref name=ADAstandards2020/>
* Before glucose intake (fasting): 5.3&nbsp;mmol/L (95&nbsp;mg/dL)
* 1 hour after drinking the glucose solution: 10.0&nbsp;mmol/L (180&nbsp;mg/dL)
* 2 hours: 8.6&nbsp;mmol/L (155&nbsp;mg/dL)
* 3 hours: 7.8&nbsp;mmol/L (140&nbsp;mg/dL)