I think the urine is listed among other things that police have the right to take from the house if they find, including anything biological, blood , semen AND / OR urine, whatever they find. I do not think it means urine was FOUND there. See what I mean?
Yes. The search warrant is for items they are looking for.
The affidavit probably lists the things found in/on/by, etc her.
They are trying to match what they find in the house, cars to see if anything matches the crime scene.
We do not know what was at the crime scene except a tarp, red tape, hands and feet bound with something , a plastic bag over her head and perhaps a plastic bag under her as well as the plastic bag over her body.
The rest of the items we have to speculate upon for what they could be. For instance, the different restraints listed. The toilet paper, the hot tub water and chemicals, and so on,