Yessss. His dom calls him a slut but then says that he needs to make sure he has a healthy slut so he starts collecting samples

He sticks a swab in s4ps mouth and tells him to get it nice and wet and then he puts it in tube and labels it. Then he goes and swabs under his eyes to collect his tears. Then (and this is before his first orgasm) he goes and sticks a swab through the cage and in the slit on his cock and s4p is squirming so hard and his dom snaps cause he's trying to collect his precum and when he cums for the first time he once again sticks the swab in the slit of his cock to collect a sample

After its all done and s4ps cum dry his dom unstraps him and leads s4p to the bathroom where he then makes him pee in a cup but s4p is so pee shy, especially cause he still has the cage on but his dom manages to coax out some piss and praises s4p of what a good little slut he is for him