Laboratory Test Information Guide

Details for Calcium-Total,Plasma

Test Name: Calcium-Total,Plasma
Alternate Name(s):  
Laboratory: Core
Specimen Type: 4.5 mL Light Green top Vacutainer tube

Serum from a 5 mL Gold top or 6 mL Red top Vacutainer tube is also acceptable.

Pediatric:
0-2 years: 0.5 mL Green Microtainer
2-10 years: 2 mL Green top tube
Collection Information: Collect blood aseptically in a Vacutainer tube.

Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
1 hour
 
Reference Range: 0-10 days:
1.89-2.59 mmol/L
11 days-2 years:
2.24-2.74 mmol/L

2 years-Adult:
2.20-2.55 mmol/L
Effective Date: 2008-11-15
Revised Date: 2014-02-25
Critical Value: Calcium: <1.5 or >3.3 mmol/L (Report Albumin, if available)
Interpretive Comments: About 45% of calcium is albumin bound. Depressed albumin levels are the most common cause of low total calcium values. Suggested approximate correction factor: add 0.25 mmol/L to calcium value for each 10 g/L that albumin falls below 40 g/L.
Special Processing:  
Comments: If Gadolinium-containing contrast media for MRI has been administered wait 48 hours before blood collection.
Method of Analysis: Endpoint Colorimetric assay
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Cerner
CA
 
Referred To:  

Questions? Comments? Contact Laura Gopaul