Calcium is chemical substances that form structural mineral in our bones.
Calcium is major cation in the body system.
There are many Medical Laboratory method available for the estimation of calcium levels in our body Plasma or serums.
Some among of this method depends on the precipitation of insoluble salt of Calcium.
Atomic absorption flame Photometry and Titration with Ethylene Diamine Tetraceptic Acids, (EDTA), are the most widely used method in the laboratory.
Another method which has become popular too, is Dye-Binding Method, e.g. methyl-thymol blue or cresophthalen complexone method.