A normal potassium level is generally 3.5 to 5.5 milliequivalents per liter (mEq/L). Some laboratories use different ranges for normal but I consider the above noted ranges to be normal. The creatinine level is mildly elevated, however, I would review this with your physician as this may be satisfactory for you. You may have early stage chronic kidney disease based on your history. You can calculate your estimated glomerular filtration rate (eGFR) by using the equations on our web site. You can access these equations at: https://www.kidney.org/professionals/KDOQI/gfr_calculator
I suggest that you review your concerns with your physician.