Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

CALCIUM, 24 HOUR URINE

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB1923         Geisinger Epic ID: 6514

SPECIMEN COLLECTION
Specimen type:
24-hour urine
Preferred collection container:
Specimen required:
5 mL aliquot of urine; minimum 1 mL.
Special notes:
Specimen may be collected without acid. Estimate total collection volume from 24-hour urine container. Add 30 mL 6N HCl to the 24-hour collection container and mix well prior to removing aliquot. Record total volume on both aliquot tube and request slip (if applicable).

SPECIMEN PROCESSING
Specimen processing instructions:
If an aliquot is received without the added acid, follow the processing step for Calcium, random urine. 
Transport temperature:
Refrigerated (preferred). Room temperature or frozen specimen also acceptable.
Specimen stability:
Room temperature: 2 days. Refrigerated: 4 days. Frozen: 3 weeks.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
Urine calcium: 0.05-0.30 gm/24 hours.
CPT code(s):
82340
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:
Calcium - 24-hour urine, 24-hour total volume.
Methodology:
Spectrophotometric (Colorimetric)
Synonyms:
CA24
Clinical significance:
Urinary calcium reflects dietary intake, rate of calcium absorption by the intestine, and bone resorption. Urinary calcium is used primarily to evaluate parathyroid function and the effects of vitamin D.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/24/2020

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily, all shifts
Performed stat? No
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