Laboratory Test Information Guide

Details for Calcium-Ionized, Whole blood

Test Name: Calcium-Ionized, Whole blood
Alternate Name(s): Ionized Calcium
Laboratory: Core
Specimen Type: 4.5 mL Green (Lithium Heparin) top Vacutainer tube or Electrolyte-balanced heparin in blood gas syringes
Dark Green (Sodium Heparin) top Vacutainer tube is also acceptable.
Collection Information: Venous or arterial specimens are preferred.
For venous and arterial specimens, do not remove top until ready to analyze.

DO NOT USE A TOURNIQUET WHEN COLLECTING A SPECIMEN FOR IONIZED CALCIUM.

Pediatric Requirements:

Capillary specimens are to be drawn on pediatric patients only, when a venous or arterial specimen is NOT an option. When collecting a capillary specimen, the specimen must be collected in a capillary tube; not a microtainer, mixed with a magnet and capped. It must be sent on ice.

Minimum volume required is 125ÁL

Glass clinitube (heparinized)
Mixing wire (flea)
Caps
Magnet

- when done collecting blood, apply caps tightly to both ends of the clinitube
- mix blood with metal flea by running magnet up and down full length of the tube multiple times, to prevent clotting
- samples must be sent to lab on ice
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
24 hours
Stat
 
 
Reference Range: 1.09-1.30 mmol/L
Effective Date:  
Revised Date: 2019-05-23
Critical Value:  
Interpretive Comments:  
Special Processing:  
Comments:  
Method of Analysis: Electrode measurement
Critical Information Required:  
Storage & Shipment: Specimen is suitable for testing up to 8 hours after collection. Specimen must NOT be exposed to air prior to collection. Please keep the specimen anaerobic and do not aliquot. The sample should be refrigerated and sent refrigerated (on cold packs) to LHSC for analysis.
System Codes: 
Cerner
CAIBLD
 
Referred To:  

Questions? Comments? Contact Laura Gopaul