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St. John Health System
Lab Catalog


Index:

Calcium Ionized

Order Name CALCIUM IZ
Test Number: 2020125
Revision Date 10/01/2022
Test Name Methodology LOINC Code
Calcium Ionized
1995-0 
Calcium NL-corrected
29265-6 
Calcium pH
2753-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred Full Tube Serum Clot Activator SST Refrigerated
Instructions Collect a full gel barrier clot tube; underfilled tubes will be rejected. Do not open tube. Allow specimen to clot then centrifuge and transport unopen. Keep refrigerated and unopened until or prior to testing. Specimens are only stable at ambient 3 hours.
Minimum volume: is little more than a half filled tube, too much dead space in tube will effect the result of the assay.
Specimen Stability: Room temperature: 6 hours, Refrigerated: 72 hours, Frozen: unacceptable
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days 
Clinical Use Useful as a second order test in the evaluation of patients with abnormal calcium values, assessment of neonatal calcium states and assessment of calcium status in critically ill children and adult patients. 
Notes Performed at Main Laboratory at Ascension St. John.
CPT Code(s) 82330
Internal Comments Added stability information per Kendra - JLS
10/27/17 added perf at SJMC only
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry