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Test Code 1426 Calcium, Urine, Random

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Colorimetric (NM-BAPTA)

Literature Reference:

Package insert: Calcium CA2 reagent. Roche Corporation, 02/2014.

Specimen Requirements

Specimen Type: Urine, random

Containter/Tube: Urine Complete Cup Kit

Specimen Volume: 10 mL


Collection Instructions: No additive.

Additional Information: See Urine Collection in Special Instructions for additional information.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Reference Values

No established reference intervals

Literature Reference:

Tietz, Burtis CA, Ashwood ER, Bruns DE eds: Textbook of Clinical Chemistry and Molecular Diagnostics 5th ed: Chapter 52, p. 1747-1748, 1764, Elsevier, St. Louis, MO 2012.


Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only
Analyte Stability:

See Analyte Stability Chart in Special Instructions.

Specimen must be kept refrigerated before delivery to limit bacterial growth.

Laboratory Processing Instructions:

Test performed in BJH Core Lab. Mix urine well. Using 13x100 test tubes, prepare a 7-mL aliquot. Check the pH of the urine. If pH is >4, add 6 N HCl in 1 drop increments until the pH is between 2.5 and 4.0. Do not over adjust. Heat for 10 minutes at 56° C. Deliver to the automated line for centrifugation and delivery to Cobas 8000 for analysis. Completed specimen is stored refrigerated for 5 days.

Specimen Transport Temperature


LOINC Code Information

Name LOINC Code
Calcium in urine 17862-4