Have you had personal experience with calcification from phosphorus?
I believe I have had calcification experience, though not proven with scans. I had already begun calcium supps. before measuring blood serum. It was normal, but many researchers believe that phosphorus over 3.5 mg/dl
increases all cause mortality. Mine was above that.
I brought it down to low normal.
I was a very stiff child, couldn't touch toes. Had many pains in joints, then kidney area later. During this past year ( now taking calcium ), I've had transient pain in joints, neck, head, fingers, and flank. Each time the pain and stiffness is milder. It seems that I'm improving. Much less dental plaque, hygienist commented.
Couldn't tolerate vitamin D until recently. Vitamin D enhances calcium and phosphorus uptake. ( I use it transdermally. )
Boxed foods and fast foods have been inundated with phosphates. We don't even know how much.
Fertilizers are loaded with it. The run off is part of the cause of toxic algae blooms.
btw, I've had skin lesions, acne like , for about 6 years. They've been moving around from arms to shoulders, now chest. They seem to be lessening.
You may want to test PTH, and FGF 23 to see if calcium is high .. If they're high, then phosphorus may be low in blood serum, but not deficient.