When to do sugar sifting

Is it necessary to sift sugar? When is the sugar sifting done? It is necessary to do it. Sugar screening is the abbreviation of gestational diabetes screening. It is usually done between 24 and 28 weeks of pregnancy. The screening method of sugar screening is: fast for 12 hours, dissolve 50 grams of glucose powder in 200ml of water, drink it within 5 minutes, start timing from the first sip, draw blood to check blood sugar after 1 hour, blood sugar value ≥7.8mmol is considered sugar If the screening is abnormal, further glucose tolerance test (OGTT) is required. Glucose tolerance test (OGTT) method: fast for 12 hours before the test, first draw fasting blood to check blood sugar, then add 150ml of 50% glucose injection to 100ml of water, or dissolve 75g of glucose powder in 300ml of water, drink it within 5 minutes. Start timing from the first sip, and draw blood to check blood sugar after 1 hour, 2 hours, and 3 hours. The normal values ​​are: 5.6 mmol/L on an empty stomach, 10.3 mmol/L at 1 hour, 8.6 mmol/L at 2 hours, and 6.7 mmol at 3 hours. /L, if 2 or more items reach or exceed the normal value, it can be diagnosed as gestational diabetes, and if only 1 item is higher than the normal value, it can be diagnosed as abnormal glucose tolerance. On the day before the OGTT, fast for at least 8-10 hours after dinner until the next morning (no later than 9 a.m.) for three consecutive days before the test, with normal activities and a normal diet, that is, eating no less than 150g of carbohydrates per day. [Latest Fourth Edition] Pregnancy Bible Full Text Reading Ultra-clear Scan PDF Download 108M During the examination, use 75g glucose powder, add 300 ml of warm water, drink it within 3-5 minutes, and measure before taking sugar water, 1 hour after taking sugar water, and 2 Hourly venous blood sugar (time calculated from the first drink of water), sit quietly and refrain from smoking during the examination.