Hi Chellied,
To answer your question I think it’s normally 30 minutes since finishing your water, whatever they tell you to drink.
Your dads bound to be nervous but let me try and reassure you AND your dad that the Radiographers are simply wonderful, so understanding and helpful and they’ve seen it all before and won’t bother if he has an accident.
Heres some hints that might help him.
If during the wait he is struggling, let the staff know and they might say to let a bit out just to keep you comfortable, But Ask first!
I found that if I did something to keep my mind of wanting to pee, it helped enormously. I played solitaire on my phone and I also wrote a poem about my journey. The time passed much quicker that way and took my mind off it.
Check when you go in if they’re running on time and don’t start drink your water until they either tell you too, or in my case I just drank it 35 mins before I knew I was going to be taken.
Take some spare underwear and trousers just in case. If he’s in a car on the way home I would also take a pee bottle with you (which you can buy on Amazon) and a towel and wipes just in case he needs to go, especially if you’ve got more than a short journey. If it’s a long journey you might want to find out where toilet stops could be.
Finally, I am sure like the rest of us, he will get into a routine and soon be chatting away to the radiographers and wondering WHY he was ever worried😊
Wish your dad the best of luck from me,
Derek