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HelpTest Code RCA NEW Urine Calcium, Random
Specimen and Container/Tube
Specimen Type: Urine, Random Collection
Preferred Specimen: Sterile Plastic Container
Other Acceptable specimens: Sterile Clean Glass Container
Specimen Handling and Transport Instructions
UCMC Onsite Instructions:
- Collect specimen per standard collection procedure and send to laboratory immediately.
- No preservatives or additives.
UCMC Offsite and UC MedLab Outreach Instructions:
- Samples should be centrifuged within 2 hours of collection
- No preservatives or additives
- Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
- Aliquot urine into plastic tube containing a minimum of 0.2 mL of specimen.
- Urine samples must then be sent refrigerated at 2-8oC.
Rejection Criteria
- Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
- Specimens that are collected with preservatives or additives.
- Specimens that have been stored at room temperature for extended periods (>8 hours).
Reference Values
|
Test |
Age |
Sex |
Reference Range |
|
Urine Calcium |
All |
All |
N/A |
Critical Values
Not applicable
Turnaround Time
Turnaround times are relative to the time the specimen is received in the test laboratory.
STAT Turnaround Time: 1 hour
Routine Turnaround Time: 4 hours
Testing Schedule: 24/7
CPT Codes
82340
LOINC Codes
TBD
Volume
Preferred Volume: 0.5 mL
Minimum Volume: 0.2 mL
Specimen Stability
|
Storage Temperature |
Stability |
|
Room temperature |
48 hours |
|
Refrigerated |
4 days |
|
Frozen |
3 months |
Collection Instructions
- Collect specimen per standard laboratory collection procedures.
- No preservatives or additives.
Test Components
Urine Calcium
Clinical Indications
The test is used for the diagnosis and monitoring of hypocalcemia (calcium deficiency) and hypercalcemia (excess
calcium) in urine. Drugs containing strontium salts may lead to significantly increased calcium results.
Methodology
Spectrophotometric with 5-nitro-5’-methyl-BAPTA (Roche Diagnostics)
Synonyms/Keyword Search
Not applicable
Additional Information
- Results should always be assessed in conjunction with patient's medical history, clinical examination and other findings.
- Reference ranges for random urine specimens have not been established; subject to ordering physician interpretation only.
Last Review Date
4/3/2025