Before / starting for the proceed for the inducion, they have the urinary catheter "attached" to me as the labor hours are expected to be long.
The Catherter was then removed after 10 hours I gave birth (that is after my Gynea has checked my condition and gave the green light to the nurse).
After which the nurse will "collect" my "first" urine (after the Catherter was removed) and checked whether its alright. I think they just want to make sure if I have any urine infection after birth.
Luckily everything is alright and I was discharge on the 2nd day.
Hope this help your queries / worries...