Comparison of screening and diagnostic criteria of gestational diabetes
| Year | Patient screening | Two-step testing | Screening | Screening threshold | OGTT glucose load (g) | Dx thresholds (BGL in mmol/L) | Elevated OGTT values for Dx | |||
| FBG | 1 hour | 2 hour | ||||||||
| NICE | 2015 | Clinical risk | 75 | 5.6 | - | 7.8 | 1 | |||
| SIGN | 2017 | Clinical risk | 75 | 5.1 | 10 | 8.5 | 1 | |||
| BPAC | 2014 | All | Y | 50 g GCT | 7.8 | 75 | 5.5 | - | 9.0 | 1 |
| CDA | 2013 | All | Y | 50 g GCT | 7.8 | 75 | 5.3 | 10.6 | 9.0 | 1 |
| IADPSG | 2010 | All | 75 | 5.1 | 10.0 | 8.5 | 1 | |||
| ADIPS | 2014 | All, unless resources limited | 75 | 5.1 | 10.0 | 8.5 | 1 | |||
| WHO | 2013 | All | 75 | 5.1 | 10.0 | 8.5 | 1 | |||
ADIPS, Australian Diabetes in Pregnancy Society; BPAC, Best Practice Advocacy Group New Zealand; CDA, Canadian Diabetes Association; FBG, fasting blood glucose; GCT, glucose challenge test; IADPSG, International Association of the Diabetes and Pregnancy Study Groups; NICE, National Institute for Health and Care Excellence; OGTT, oral glucose tolerance test; SIGN, Scottish Intercollegiate Guidelines Network; WHO, World Health Organization.