Home
HelpTest Code LAB371 Calcium, Urine, Random
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Methodology
Colorimetric (NM-BAPTA)
Literature Reference:
Package insert: Calcium CA2 reagent. Roche Corporation, 12/2018.
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 information under General 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
Test Classification and CPT Coding
82310
Reference Values
No established reference intervals
Literature Reference:
Rifai N, Horvath AR, Wittwer AT eds: Textbook of Clinical Chemistry and Molecular Diagnostics 6th ed: Chapter 64, p. 1422, Elsevier, St. Louis, MO 2018.
Specimen Transport Temperature
Ambient
Additional Information
For BJH Laboratory Use Only
Analyte Stability:
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.
Special Instructions
See Urine Collection information under General Information.
See Analyte Stability Chart under General Information for a complete list.
LOINC Code Information
| Name | LOINC Code |
| Calcium in urine | 17862-4 |