Radio contrast dyes can cause free radical damage to the kidneys. When circulation is impaired, the risk is higher. Often when someone has a heart attack and gets scanned, the kidneys fail right after. Of course, damage can be anywhere from severe to minimal.
This is preventable, but I think that NAC is rarely used: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257451/
Are you using a corticosteroid?
Have you ever tested IGF-1 to eval your GH status?
Are you using a statin drug? dose? how long?
Poor T4-->T3: Ferritin level needs to be good.
fT3 is the active hormone and fT3, fT4 should be tested. Do not bother with uptake or index tests that are obsolete.
Kidney will not affect prostate unless there is inflammation from a co-infection.
Ejaculation is important to clear the seminal vessels and they can become inflamed from rancid fluids and the inflammation irritates the prostate and PSA increases and the inflammation can contribute to BPH and cancer. Any infection of the seminal vessels or prostate sings the same song.
Your wife getting frequent kidney infections should not be ignored as a possible link to your issues. She may be creating antibiotic resistant bacteria that are a threat to your urinary tract as well. If you are sexually active, you both may need to take medication at the same time.
Please post lab work with ranges.