I went through all of this and was freaking out.
After sanity prevailed from desperate research, I came to the conclusions that:
This is a relatively normal phenomenon amongst bb'ers ( *read below) both due to high protein intake as well as higher levels of muscle mass.
Additionally, after multiple discussions with my Urologist about these findings, creatine was perfectly fine and not problematic.
That said, it is important that you DO ACCEPT that there IS IN FACT a slightly increased kidney stress inherent with these findings and as a result, you need to be cognizant of maintaining overall health to offset any disorders that may aggravate this ordeal and then put you at "actual" risk.
These include (but are not limited to):
--Get your daily PURE WATER in (minimum of a gallon per day)
--Watch your blood pressure!!!!!! (stresses your kidneys)
--Keep an eye on/Lower your Sodium intake
--UP your Potassium intake (offsets excessive sodium to a degree)
--Eat lots of veggies as MOST are alkaline and mitigates the acidity in the blood that accomapnies high meat intake (also thwarts kidney stione formation, related to high protein diets)---Keep protein at SANE doses (1 gram per bodyweight whould suffice...MAXIMUM 1.5 grams per LB of bodyweight). I say this b/c you are apparently like me (based on your blood assays) where HIGH doses obviously impact you where others can "get away with it"
--Limit simple sugars as these aggravate the pancreas from cummulative exposure and then decrease insulin sensitivity and then leave you pre-diabetic (this also stresses the kidneys)
---NOT WISE, but if you chose to use gear, monitor ALL vitals (especially BP!) as gear can also adversely impact your kidney health!
Lastly, get your tests 2x/year to keep an eye on things and document patterns and changes!