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Kidney Stone Risk AssessR™
Test Code90523
CPT Codes
82340, 82436, 82507, 82570, 83735, 83935, 83945, 83986, 84105, 84133, 84300, 84560<br>**This test is not available for New York patient testing.**
Includes
Calcium, 24-hour Urine
Chloride, 24-hour Urine
Citric Acid, 24-hour Urine
Creatinine, 24-hour Urine
Magnesium, 24-hour Urine
Osmolality, 24-hour Urine
Oxalate Acid, 24-hour Urine
Phosphate, 24-hour Urine
Potassium, 24-hour Urine
Sodium, 24-hour Urine
Uric Acid, 24-hour Urine
pH, Urine and Interpretation
Chloride, 24-hour Urine
Citric Acid, 24-hour Urine
Creatinine, 24-hour Urine
Magnesium, 24-hour Urine
Osmolality, 24-hour Urine
Oxalate Acid, 24-hour Urine
Phosphate, 24-hour Urine
Potassium, 24-hour Urine
Sodium, 24-hour Urine
Uric Acid, 24-hour Urine
pH, Urine and Interpretation
Preferred Specimen
10 mL 24-hour urine and 10 mL 24-hour urine preserved with HCL
Minimum Volume
5 mL each specimen
Instructions
Prepare two sample aliquots from the same 24-hour well-mixed urine collection:
Sample aliquot #1: 10 mL (5 mL min), no preservative. Pour urine aliquot into a leak proof urine transport container. Record the 24-hr urine total volume in mL and "No Preservative" on the specimen container. Record the 24-hr urine total volume on the test requisition form.
Sample aliquot #2: 10 mL (5 mL min), pH adjusted to < 3. Pour urine aliquot into a clean, acid-washed, detergent-free leak proof container. Adjust pH to < 3 with 6NHCL. Record 24-hr total volume in mL and "HCL" on the specimen container. Ensure that the 24-hr total volume has been recorded on the test requisition form.
Sample aliquot #1: 10 mL (5 mL min), no preservative. Pour urine aliquot into a leak proof urine transport container. Record the 24-hr urine total volume in mL and "No Preservative" on the specimen container. Record the 24-hr urine total volume on the test requisition form.
Sample aliquot #2: 10 mL (5 mL min), pH adjusted to < 3. Pour urine aliquot into a clean, acid-washed, detergent-free leak proof container. Adjust pH to < 3 with 6NHCL. Record 24-hr total volume in mL and "HCL" on the specimen container. Ensure that the 24-hr total volume has been recorded on the test requisition form.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
24-hour urine (no preservative)
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 60 days
24-hour urine preserved with HCL
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: Not established
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 60 days
24-hour urine preserved with HCL
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: Not established
Methodology
Colorimetric (C) • Calculation (CALC) • Spectrophotometry (SP) • Freezing Point Depression • Ion Selective Electrode (ISE) • pH Meter
Setup Schedule
A.M.
