Creatine levels high but minerals normal

Hello I have a 12-year-old cat named Lucy, and she was diagnosed with early kidney disease a couple years ago, as you can see the creatinine in one blood test is at 203 that was from 2022 the next one was from July 2023 at 250 and then this one that says 390 is from a few weeks ago can someone explain to me why it is so high but it still doesn't look like her potassium or other minerals are depleting?? Is this hood is this normal does it mean something else is going on?? She was also diagnosed with aggressive mammory cancer Aug 2020 but I started her on cbd oil immediately, a recommendation from a vet to try to stop the growth of the tumors, it was working!! Then 2 years later she had a lumpectomy and that's why the 2022 bloodwork was done. Shes on a raw food diet and some tonics for her kidney, probiotics, omegas and turmeric as well.

Hello- and I sorry to hear about the kidney diagnosis.  I know nothing about your cats' case, so will speak generally.  First, I would never diagnose a cat with renal failure based on high Urea and Creat levels alone.  This is because dehydration can also cause this sort of profile and is frequently reversible, simply by rehydrating the patient.  To diagnose kidney failure, your vet will look at multiple factors including the specific gravity of urine and how well hydrated the patient was at the time.  Blood Potassium levels can be influenced by other things; not only do the kidneys regulate Potassium, but it can also be affected by cell breakdown, by  vomiting and diarrhoea, by the diet and dietary supplementation and a regulatory system involving phosphate ions.  Low potassium, "hypokalaemia", is a well-known complication of kidney failure.  However it is not a defining feature of kidney disease.