Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

CALCIUM, IONIZED

ORDERING INFORMATION:
Sunquest Test Code:
CAI      Geisinger Epic Procedure Code: 82330.02         Geisinger Epic ID: 14322

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Specimen required:
Capped, spun 3.5 mL gold-top serum separator tube; minimum 1 mL.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow to clot. Centrifuge at 1100-2000 x g for 10 minutes at room temperature. Specimen must be spun within 3 hours of collection. Do not uncap or aliquot. 
Transport temperature:
Refrigerated.
Specimen stability:
Unopened, centrifuged SST tube stable 3 days refrigerated. Unspun and unopened SST tube stable 3 hours at room temperature or refrigerated.
Rejection criteria:
Stability limits exceeded. Specimens that have been opened.

TEST DETAILS
Reference interval:
All except GSACH: 0-17 years: 1.22-1.37 mmol/L. 18 years and older: 1.13-1.32 mmol/L
GSACH: 1.15-1.29 mmol/L
Critical values/courtesy alerts:
Below 0.76 mmol/L; above 1.59 mmol/L.
CPT code(s):
82330
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Ionized calcium.
Methodology:
Potentiometric
Synonyms:
Free calcium
Unbound calcium
Clinical significance:
Ionized calcium represents the true "bioavailable" calcium in the circulation. It is measured with an ion-selective electrode (ISE) and corrected to a pH of 7.0. Ionized calcium is frequently measured with parathyroid hormone (PTH) to assess hyperparathyroidism.
Doctoral Director(s:)
Hoi-Ying Elsie Yu PhD, DABCC    
Review Date: 11/13/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Stat Lab
Technical Lead: Karen Delp
Frequency: Daily, Monday-Sunday
Performed stat? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Sarah McGowan    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Shamokin Area Community Hospital

Performing laboratory: Chemistry
Technical Lead: Kelly Alleman    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Bloomsburg Hospital

Performing laboratory: Chemistry
Technical Lead: Robyn Stokes  
Frequency: Daily    
Performed stat? Yes

Geisinger Community Medical Center

Performing laboratory: Chemistry
Technical Lead: Ann Mack, Deborah Dempsey  
Frequency: Daily all shifts    
Performed stat? Yes

Geisinger Lewistown Hospital

Performing laboratory: Chemistry
Technical Lead: Melissa Forsythe  
Frequency: All shifts    
Performed stat? Yes

Geisinger Holy Spirit Hospital

Performing laboratory: ATL+
Technical specialist: Hadeel Naghnaghieh    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger South Wilkes-Barre

Technical specialist: Bernadette Johnson    
Frequency: Daily, all shifts    
Performed stat? Yes
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*GMC - Geisinger Medical Center; GWV - Geisinger Wyoming Valley Medical Center; GSACH - Geisinger Shamokin Area Community Hospital; GBH - Geisinger Bloomsburg Hospital;
GCMC - Geisinger Community Medical Center (Scranton); GLH - Geisinger Lewistown Hospital; GHS - Geisinger Holy Spirit; GJSH - Geisinger Jersey Shore Hospital,
GSWB - Geisinger South Wilkes-Barre