Does anyone know how I can collect a first morning urin sample from a 2yo? We need one for his allergy tests tomorrow, apparently. He was only 2 on Saturday and isn't trained at all. I've given him a potty to sit on and play with but he's never shown any interest in weeing in it, and I haven't pushed him, because I think he's too young. Does anyone have any idea how I can get a wee sample from him, and will they still be able to test him for sesame seed allergy if we turn up without one?