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Specimen Collection Manual and Test Catalog

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CALCIUM, RANDOM URINE

Geisinger Epic Procedure Code:  LAB1926    Geisinger Epic ID:  14320

SPECIMEN COLLECTION
Specimen type: 

Random urine.


Preferred collection container: 
Specimen required: 

5 mL aliquot of urine; minimum 1 mL.



SPECIMEN PROCESSING
Processing instructions: 

Mix specimen thoroughly to resuspend any particulate matter prior to removing aliquot. The pH should be adjusted to 3 to 4 with 6 mol/L HCl.


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: 

Not specified.


CPT code(s):  82310
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.

Methodology: 
Spectrophotometric (Colorimetric)
Synonyms: 

CAU


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, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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