I do support my patients using home blood pressure monitors and bring results in for me to review. Using the home cuff will give your physician more information to assist in making recommendations for your care. I use my target for blood pressures to average less than 140/80. There may be reasons to use a lower number in certain instances.
I suggest you review our web site about the calculator for estimated glomerular filtration rate (eGFR) which can be found at: https://www.kidney.org/professionals/kdoqi/gfr