CALCIUM, 24-HOUR URINE - NorDx Test Catalog

Additional Codes

Software	Test Code
Label Text	CA24
EPIC	LAB814

Performing Laboratory

NorDx Laboratories

Useful For

The differential diagnosis of absorptive hypercalciuria and hypercalciuria caused by hyperparathyroidism, hyperthyroidism, Paget’s disease, or “renal leak” type of calciuria as seen in renal tubular acidosis

Method Name

Colorimetric

Reference Values

50 - 300 mg/24hr

The reference value is for a 24-hour collection. Specimens collected for other than a 24-hour time period are reported in units of mg/dL, for which reference values are not established.

Days and Times Test Performed

Monday through Sunday

Report Available

1 Day

Profile Information

Individual Test Description
CALCIUM, 24 HOUR URINE
DATES OF COLLECTION, 24 HOUR URINE
VOLUME, 24 HOUR URINE

Specimen Type

Urine, 24-Hour

Preferred Container

24-Hour Urine Container – 24-Hour Urine Jug without additive or with 25.0 mL 6N HCl.

24 hour collection required.

Preferred Volume

Urine, 24-Hour: 10 mL (24-Hour Urine Container)

Minimum Volume

Urine, 24-Hour: 1 mL (24-Hour Urine Container)

Specimen Collection and Handling

Specimen Collection:
1.       No preservative OR add 6N HCl at the start of collection
2.       Refrigerate specimen during collection
3.       Send specimen refrigerated

To Process:
1. Prior to aliquoting, mix specimen well, measure and record volume
2. Aliquot 10mL from 24-hour urine collection into a clean, non-sterile, plastic urine container.

NOTE: 24-HOUR VOLUME IS REQUIRED ON REQUEST FORM FOR PROCESSING

Specimen Stability Information

Specimen Type: Urine, 24-Hour

Refrigerated: 4 Days

Add On Capable

Yes

Advance Beneficiary Notice Requirements

No ABN Required

CPT Code Information

CPT Code	CPT Description	CPT Disclaimer
82340	Calcium, Urine, Quantitative, Timed Specimen

Keywords

CA

CALCIUM

Performing Laboratory Location