Calcium, Total, Serum
Method Description Describes how the test is performed and provides a method-specific reference
Calcium reacts with o-cresolphthalein complexone in alkaline solution to produce a calcium-o-cresolphthalein complexone complex. The intensity of the purple complex formed is directly proportional to the calcium concentration and is measured photometrically at 600 nm.(Package insert: Roche calcium reagent, Roche Diagnostic Corp, Indianapolis, IN, 1999 July)
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Sunday; Continuously