There was a Scrubs Outfit at DAZ created by Mada / Sarsa for V4. In my database of purchased 3D items it has a date of 2008 so I don't know if it's still available. The only male version I know of is Mad Doctor for Genesis Male and it shows pockets on the coat. This item is brokered by Ravenhair and also from the DAZ store. There were a few texture sets available for it.

The only other lab coat I can remember was for M3 and it probably wouldn't work with M4 without a lot of adjustments. I think it was a DAZ item too.

Poser 2, 3, 4, 5, 6, 7, 8, 9, 10, Pro 2014, 11, 11 Pro