Yes.
This is not OGTT , but this is known as GCT (Glucose Challenge Test). This is a screening test for Gestational
Diabetes. In this everything is done on the same visit. You just have to sit at the lab for one hour.
In conventional OGTT you have to take 100 gm of glucose and so many
pregnant ladies find it difficult to take 100 gm of glucose. Then it involves 5 visits to the lab and the whole day is wasted. Next day you go to get the results.
So this is a convenient screening test.