Urine Calcium, Random - UChicago Medicine Medical Laboratories

Specimen and Container/Tube

Urine, random

Rejection Criteria

N/A

Turnaround Time

N/A

Test Includes

Quantitative determination of calcium in urine

Specimen Type

Urine, random

Container/Tube

Sterile Urine Container

Preferred Volume

0.5 mL

Specimen Minimum Volume

0.2 mL

Reject Due To

N/A

Day(s) Performed

Monday – Friday

STAT DAY(S) AND TIME(S) PERFORMED

N/A

STAT Turnaround Time

N/A

Method Name

Spectrophotometric
( with 5-nitro-5’-methyl-BAPTA)

Synonyms

N/A

Test Limitations

Urine should be pretreated and analyzed immediately.
Acidify sample to a pH of <2.0.
If preservatives need to be used for other analyte orders,
collect sample using Hydrochloric Acid (6N HCl)

Test Usage

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.

Offsite Collection Instructions

1. Collect without additives or preservatives.
2. Random urine collections only.
3. Transport refrigerated (2-8° C).

UCMC Collection Instructions

1. Collect without additives or preservatives.
2. Random urine collections only.
3. Transport refrigerated (2-8° C).

Reference Values

Reference ranges for random urine specimens have not been
established; subject to ordering physician interpretation only.

Additional Information

N/A

Stability: Room Temp

2 days

Stability: Refrigerated

4 days

Stability: Frozen

3 months

Pediatric Volume