BioConst 生物常量 — Serum calcium

これは何か

A calcium blood test measures calcium in blood, where only a small portion of body calcium is found.^[1]

Blood calcium helps interpret parathyroid, kidney, vitamin D, and cancer-related contexts, but it is not a bone calcium score.^[1,2]

Physical core: Serum calcium changes when calcium movement between blood, bone, gut absorption, kidney handling, and hormone control shifts. Because only a small share of body calcium is in blood, blood calcium is a regulated circulation signal, not a direct measure of how much calcium is stored in bone.^[1,2]
PTH 25-hydroxyvitamin D Phosphate
Control loop: PTH, vitamin D context, kidney function, and phosphate balance can push calcium regulation in different directions, so high or low blood calcium needs a pattern view rather than a single-cause reading.^[1,2,3]
PTH 25-hydroxyvitamin D Phosphate eGFR / kidney function
Reading boundary: BioConst can map calcium as a regulated mineral signal, but it does not interpret a personal calcium result, decide whether total or ionized calcium is needed, or rank a cause.^[1]

High blood calcium can be related to parathyroid disorders, certain cancers, Paget disease, excessive vitamin D exposure, or other conditions.^[1]
Low blood calcium can be related to low vitamin D, kidney disease, parathyroid problems, low protein, or other contexts.^[1]

Total calcium and ionized calcium are different measurements; albumin, illness, supplements, and medicines can affect interpretation.^[1]