Serum calcium levels are tightly regulated at 2.2-2.6 mmol/L (9-10.5 mg/dL) for total calcium and 1.1-1.4 mmol/L (4.5-5.6 mg/dL) for ionized calcium. When serum calcium falls, parathyroid hormone ...

Serum ionized calcium (SiCa ++), total and albumin adjusted calcium and intact paratharmone (iPTH) were measured at eight points covering menstrual, immediate post-menstrual, mid-cycle and ...

Unbound calcium is not attached to a protein. It's the active form of calcium, called free or ionized calcium. In most cases, ...

We hypothesized that within the range of clinically encountered pH an increase in serum P would lead to a decrease in iCa. A single donor serum was aliquoted into 25 samples stored in CO 2 sealed ...