"Ionized 1.07 1.12-1.32"
Assuming this is free (not protein-bound) Ca2+ in units of mmol/L, it is just outside the normal range.

"cbc 9.2 8.3-10.5"
If this is total (free and protein-bound) blood Ca2+ in units of mg/dL, it looks fine to me.

"there is a trend I'm concerned about"
If there are trends in total and/or free blood Ca2+ then this is worth discussing with your doctor.

"the low gfr. I think 59"
A glomerular filtration rate of 59 suggests mild to moderate loss of kidney function.

"I think a pth level test next"
Good idea. If you have not already done so, getting your doctor to check your Vitamin D level is also an idea - Vitamin D is important in Ca2+ metabolism.

The info in this (long...) link might help you to ask your doctor informed questions; http://www.kidney.org.uk/help-and-in...osphate-index/ .