Yep, I found out we were having a boy at the 12 week scan. It all depends on how experienced the sonographer is. Those that say they won't attempt to look, are generally the ones that aren't that experienced. My sonographer had over 20 years experience & boy you could tell. She zoomed around picking out body parts so quickly, I knew she knew her stuff. My Obstetrician said that if they say a boy, then there's a good chance it is, though if they say girl, the willy could just be hiding.