drsuefowler,
I'd skip the night before injection. And I'd skip supplements the day before, mainly boron, d and calcium and any protein supplements.
Stage 2 kidney disease may be common in age. Under that rubric we can use the term normal.
Serum gfr is an estimated rate influenced by high protein intake, muscle building exercise, muscle loss and damage to muscles-- factors that aren't an indication of the loss of kidney function. Serum calcium and calcium in the urine can be affected by calcium and d intake.
Forteo increases urine calcium.
Precise ways of directly measuring GFR exist but are inconvenient and seldom employed.
I wonder too about all these supplements. I even take phosphatidylserine, but I laugh a little at myself.
I do get serum d levels twice a year and adjust intake accordingly. 20–50 ng/mL (50–125 nmol/L) I aim for 70nmol/L.
I'll be curious if you still register the estimated stage 2.