Screening and diagnosis of gestational diabetes mellitus – relevance to low and middle income countries

Table 1 Various criteria proposed for diagnosing GDM based on fasting OGTT

Criteria	Year proposed	Approach	Glucose load (g)	Glucose threshold mg/dl (mmol/l)
Criteria	Year proposed	Approach	Glucose load (g)	Fasting	1 h	2 h	3 h
O’Sullivan & Mahan	1964	2 step	100	90 (5.0)	165 (9.2)	145 (8.1)	125 (6.9)
National Diabetes Data Group (NDDG)	1979	2 step	100	105 (5.8)	190 (10.6)	165 (9.2)	145 (8.1)
Carpenter & Coustan	1982	2 step	100	95 (5.3)	180 (10.0)	155 (8.6)	140 (7.8)
World Health Organization (WHO)	1999	1 step	75	126^a (7.0)	–	140 (7.8)	–
American Diabetes Association (ADA)	2004	2 step	100	95 (5.3)	180 (10.0)	155 (8.6)	140 (7.8)
Latin American Diabetes Association (ALAD)^b	2008	2 step	75	100 (5.5)	–	140 (7.8)	–
International Association of Diabetes and Pregnancy Study Groups (IADPSG)	2010	1 step	75	92 (5.1)	180 (10.0)	153 (8.5)	–
World Health Organization 2013 criteria (revised, same as IADPSG)	2013	1 step	75	92 (5.1)	180 (10.0)	153 (8.5)	–
National Institute for Health and Care Excellence (NICE)	2015	1 step	75	101 (5.6)	–	140 (7.8)	–

Adopted from (Vandorsten et al., 2011) [15]
Values in parenthesis are in mmol/l
^aLater this fasting value was dropped
^bCriteria for the diagnosis of gestational diabetes in selected countries of the Americas. Final report of the Pan American Conference on Diabetes and Pregnancy [32]

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