I don't think I have a problem with CRP. It was measured frequently when I had blood tests in the past. The only time it was high when I had sensory neuropathy which I haven't had for years, so it is unlikely to have a close connection to POIS.
Earlier values:
2010. 10.: 7.1 mg/L (< 5.0)
2012. 05.: 2.4 mg/L (0.0 - 10.0)
2016.02.: 2.1 mg/L (< 5.0)
2018. 06.: 3.3 mg/L (< 5.0) (ultrasensitive)
Four years ago I went to Urology to ask for some prescription drug for my urination problems, but as they couldn't find any problem they denied any help. I told them that I have some kind of sexual autoimmune disease, but they were not interested. However they did a manual prostate check and found it was alright. I was certainly in acute POIS as well.