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Test Code CACR1 Calcium, Random, Urine

Useful For

Evaluation of calcium oxalate and calcium phosphate kidney stone risk, and calculation of urinary supersaturations

 

Evaluation of bone diseases, including osteoporosis and osteomalacia

Method Name

Photometric, NM-BAPTA Reaction

Reporting Name

Calcium, Random, U

Specimen Type

Urine


Specimen Required


Collection Container/Tube: Plastic urine container

Submission Container/Tube: Plastic, 5-mL tube (T465) or a clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 4 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Reference Values

Random Calcium/Creatinine Ratio: <0.20 mg/mg

 

Reference values have not been established for patients <18 years and >83 years of age.

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been modified from the manufacturer’s instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

82310

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CACR1 Calcium, Random, U 17862-4

 

Result ID Test Result Name Result LOINC Value
CALC5 Calcium, Random, U 17862-4
CREA7 Creatinine Concentration 2161-8
CCTR Calcium/Creatinine Ratio 9321-1