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Test Code CACR3 Calcium/Creatinine Ratio, Random, Urine


Specimen Required


Supplies: Sarstedt Aliquot Tube 5 mL (T914)

Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert

Submission Container/Tube: Plastic, 5-mL tube 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 Type

Urine

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  30 days
  Ambient  72 hours

Reject Due To

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

Reference Values

1 month-<12 months: 0.03-0.81 mg/mg creatinine

12 months-<24 months: 0.03-0.56 mg/mg creatinine

24 months-<3 years: 0.02-0.50 mg/mg creatinine

3 years-<5 years: 0.02-0.41 mg/mg creatinine

5 years-<7 years: 0.01-0.30 mg/mg creatinine

7 years-<10 years: 0.01-0.25 mg/mg creatinine

10 years-<18 years: 0.01-0.24 mg/mg creatinine

18 years-83 years: 0.05-0.27 mg/mg creatinine

Reference values have not been established for patients who are less than 1 month of age.

Reference values have not been established for patients who are greater than 83 years of age.

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82310

82570

Day(s) Performed

Monday through Sunday

Report Available

1 to 3 days