Calcium/Creatinine Ratio, Urine

Message

Sendout, Mayo test code: CACR3

Test Code

LAB5210250

Alias/See Also

Calcium, Random U
CACR3

CPT Codes
82310, 82570

Preferred Specimen

4 mL random urine collected in a sterile container

Minimum Volume

1 mL

Instructions

1. Collect a random urine specimen.
2. No preservative.

Transport Container

Plastic, 5-mL tube or a clean, plastic aliquot container with no metal cap or glued insert

Transport Temperature

Refrigerated

Specimen Stability

Refrigerated (preferred): 14 days
Frozen: 30 days
Ambient: 72 hours

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Methodology
CALC5: Photometric
CRETR: Enzymatic Colorimetric Assay

FDA Status
Approved

Setup Schedule

Monday through Sunday

Report Available

1-3 days

Reference Range

Included with report

Clinical Significance

Evaluation of calcium oxalate and calcium phosphate kidney stone risk

Calculation of urinary supersaturation

Evaluation of bone diseases, including osteoporosis and osteomalacia

Performing Laboratory
Mayo Clinic Laboratories, Rochester, Minnesota

Additional Information
Calcium/Creatinine Ratio, Random, Urine

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.