What do all these test abbreviations mean in pregnancy?
In short
- Many test names are short for "a blood-sugar test after a glucose drink".
- OGTT means oral glucose tolerance test. You drink glucose, then your blood sugar is checked.
- DIPSI is India's own single-step version of this test.
- If a term isn't here, ask your doctor to explain it in plain words.
What happens
- Look up the term you saw on your report, prescription or antenatal card below.
The details: numbers and where they differ
The terms
OGTT (oral glucose tolerance test): a general term for any test where you drink a glucose solution and your blood sugar is measured afterwards, one or more times. GTT is often used as a shorter version of the same term.
DIPSI (Diabetes in Pregnancy Study Group India): the professional body behind India's single-step OGTT protocol — one 75g glucose drink, no fasting needed, one blood-sugar reading 2 hours later, used in MoHFW's national guideline.
PPBS (post-prandial blood sugar): a blood-sugar test taken a set time after a meal (rather than after a specific glucose drink) — used in general diabetes care, and sometimes loosely for pregnancy glucose testing too, though it isn't the same protocol as the DIPSI OGTT.
IADPSG (International Association of Diabetes and Pregnancy Study Groups): the international group whose criteria underpin the WHO GDM thresholds used for comparison on this page, based on a fasting OGTT with three separate cut-offs.
In the source's own words
Single step testing using 75 gm oral glucose & measuring blood sugar 2 hours after ingestion. ... The threshold blood sugar level of ≥140 mg/dL (more than or equal to 140) is taken as cut off for diagnosis of GDM.
Ministry of Health & Family Welfare, Govt of India (National Health Mission), Diagnosis & Management of Gestational Diabetes Mellitus — Technical and Operational Guidelines (2018). Quoted verbatim.
The numbers
| Measure | Value | Source |
|---|---|---|
| 75g OGTT, 2-hour blood sugar (India's DIPSI single-step test) (pregnant women, any trimester, fasting or non-fasting, India) | ≥140 mg/dL | Ministry of Health & Family Welfare, Govt of India (National Health Mission) |
| 75g OGTT fasting plasma glucose (IADPSG/WHO 2013) (pregnant women (WHO 2013 / IADPSG-based criteria)) | 5.1–6.9 mmol/L (92–125 mg/dL) | World Health Organization (WHO) |
Discuss your results with your doctor: this page reports what these sources say, not advice for your situation.
Sources
- Ministry of Health & Family Welfare, Govt of India (National Health Mission), Diagnosis & Management of Gestational Diabetes Mellitus — Technical and Operational Guidelines (2018), 2018. Quoted verbatim. © Govt of India; page 4 grants free reproduction/quotation with attribution.
- World Health Organization (WHO), Diagnostic Criteria and Classification of Hyperglycaemia First Detected in Pregnancy (WHO/NMH/MND/13.2, 2013), 2013. Paraphrased in our own words. CC BY-NC-SA 3.0 IGO (WHO), non-commercial.
Sources checked 2026-09-26. How we source and check every page.
Educational summary of named sources, not medical advice.