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循环中钙的物理化学状态血清钙总浓度是三部分的总和。蛋白结合钙(CaProt),可弥散钙复合物(CaR)和游离钙离子(Ca~(++))。钙离子与可弥散复合钙构成总超滤过性钙。总血清钙浓度的50％可用来估计Ca~(++)浓度。从临床角度,三部分中Ca~(++)最重要。蛋白结合钙部分主要与白蛋白结合(50～80％),10～15％与球蛋白结合。McLean与Hosting等人提出Ca~(++) 与血蛋白
The Calcium Physical State in Circulation The total serum calcium concentration is the sum of three parts. Protein-bound calcium (CaProt), dispersible calcium complex (CaR) and free calcium (Ca ~ (++)). Calcium and diffusible calcium constitute the total ultrafiltration of calcium. Fifty percent of the total serum calcium concentration can be used to estimate the Ca ~ (++) concentration. From the clinical point of view, the three parts of Ca ~ (++) is the most important. Protein-bound calcium is mainly bound to albumin (50-80%) and 10-15% to globulin. McLean and Hosting et al. Proposed Ca ~ (++) and hemoglobin