We normally recommend that you have 2 glasses of water a half hour before you arrive for your scan.

How much water should I drink before my dating scan?

What do I need to know before having my dating scan? You will be asked to drink about two pints of water before the scan to fill up your bladder; this pushes up the uterus to give a clearer picture.

How many ounces do you drink before an ultrasound?

Starting 1½ hours prior to your exam, drink 32 oz. of water over the course of the first ½ hour and hold your water. IMPORTANT: DO NOT go to the bathroom until technologist finishes exam – please DO NOT empty bladder.

When is the dating scan?

If youre pregnant in England youll be offered an ultrasound scan at around 10 to 14 weeks of pregnancy. This is called the dating scan. Its used to see how far along in your pregnancy you are and check your babys development.