Table 1. Orders for total and ionized calcium determinations in 2012.

	Total calcium	Ionized calcium
ICU	15,595	46,671
Emergency Department	27,539	20,674
Wards	38,090	62,489
Outpatient Services	101,222	103,937
Others*	51,509	63,768
Total	233,955	297,539

^*Includes re-analysis on altered results

^ICU = intensive care unit.