We can just tell you right here if its male or female....all you have to do is look for a leaf like thing between the upper book lungs..if you see something sticking up....its female if there is nothing there its male...do you have a camera?...do you know exactly the book lungs are?You could carefully put the molt in a baggie with some paper towel soaked with rubbing alcohol and send it out by the next day. The part of the molt which must not be broken for sexing is the front of the bottom side of the abdomen.
I would wait at least a week and a half from the day he molted. Then after that waitin an extra few days more wouldn't hurt either...:? My redknee molted on Sunday and I took out the molt on Monday morning...How long do I wait b4 feeding him again? And even though it is dry now, can I still send it out to be sexed, the molt that is, lol?