It really depends on the level of the ultra sound. A level 2 or 3 is much more detailed and is performed in a medical center/hospital. The stronger ultra sounds are so strong that anyone can tell what is what. I had to have a level 2 and I could even tell my baby was a boy! I picked out his back bone and could see the top of his head. I could even count every one of his little fingers! The higher level ones are more accurate than an anmnio. They have a 99% accuracy. The ones in the doctors office are just "toys." They really can't see detail. The heart looks like a little blinking light pulsating. Technicians aren't really supposed to tell you anyting. It has to come from the doctor. Information kept from the public is that a binge drinker or alcoholic father or mother (Yes, fathers too...I looked it up out of curiosity and found a study on the affects of on the unborn baby from the father's side.) have a higher risk for having a baby with kidney abnormalities. That doesn't mean it can't happen if you or your hubby don't drink. I believe it, because my father was an alcoholic. We didn't acknowledge it, but he was. (He drank at least 6 bottles of beers every night and was at the local bar drinking more with the exception of a few weekdays.) He'd come home drunker than a skunk. Guess what? I was born with 2 kidneys, but they were "piggybacks." That means no kidney on one side and 2 on the other, one on top of the other. It wasn't discovered until I was 4 yrs. old. I was born that way, but back then there was no ultra sound. I won't go into how it was discovered, but they had to take one out. I now have one kidney and have no problems. No one can even tell, unless I tell them, so the baby will be ok.