Supersaturation Profile, Urine : 1001425

Test Code
USUPER or 1001425

Alias/See Also
Kidney Stone Risk Assessment (Urine Supersaturation Profile); Supersaturation Profile (Urine Supersaturation Profile)

CPT Codes
82340, 82436, 82507, 82570, 84560, 83735, 83945, 84105, 84133, 84300, 84392, 83986

Includes
This panel includes the following tests: pH, Calcium, Chloride, Citric Acid, Sulfate, Creatinine, Magnesium, Oxalate, Phosphorus, Potassium, Sodium, and Uric Acid.

Instructions
Please contact Client Services to obtain the specimen collection kit (supply #46007) prior to beginning the collection of the 24 hour urine.

24-hour urine. Specimens should be refrigerated during collection. Provide total volume.

Transport Container
Process ASAP after collection and within 24 hours after collection is complete as follows:
Use ARUP Kidney Stone/Supersaturation Urine Collection Kit. Contact Client Services for kit supply #46007.
Prepare four separate 4 mL aliquots from a well-mixed 24-hour urine collection according to the following specifications:
1st aliquot (pH 2): Dispense 4 mL of specimen into the Sulfamic Acid Tube. Mix well, then freeze.
2nd aliquot (pH 2): Dispense 4 mL of specimen into the Sulfamic Acid Tube. Mix well, then freeze.
3rd aliquot (pH 9): Dispense 4 mL of specimen into the Sodium Carbonate Tube. Mix well, then freeze.
4th aliquot: Dispense 4 mL of specimen into an Unpreserved Tube. Then freeze.
Freeze specimens immediately after aliquoting. Do not exceed 4 mL in tubes.

If the collection kit is unavailable, transport ASAP four 4 mL unadjusted aliquots of urine and send refrigerated within 24 hours of collection. If longer than 24 hours send aliquots frozen.

The urine must be processed using the collection kit within 24 hours of the end of collection.

Transport Temperature
Unpreserved Urine: Refrigerated if the specimen can arrive at the laboratory within 24 hours after the collection ended. If it will arrive after 24 hours of collection, transport frozen.

If urine is transferred to 4 Special Collection kit tubes, transport Frozen.

Specimen Stability
Ambient: Unacceptable; Refrigerated: 24 hours; Frozen: 2 weeks

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Any specimen other than 24 hour urine collection.

Methodology
Quantitative Spectrophotometry/Quantitative Enzymatic/Quantitative Ion-Selective Electrode

Setup Schedule
Wednesday & Friday

Report Available
1-8 days (From receipt at performing laboratory)

Reference Range
pH, Urine: 5.0-7.5
Calcium, Urine
Calcium-free diet: 5-40 mg/d
Low calcium diet (800 mg/d or less): 50-150 mg/d
Average calcium diet (about 800 mg/d): 100-250 mg/d
High calcium diet (800 mg/d or greater): > 250 mg/d
Magnesium, Urine: 12-199 mg/d
Sodium, Urine: 51-286 mmol/d
Sulfate, Urine: 6-30 mmol/d
Citric Acid, Urine 18 years and older: 320-1240 mg/d
Oxalate, Urine: Effective May 15, 2017
0-12 years: 7-31 mg/d
Male 13 years and older: 16-49 mg/d
Female 13 years and older: 13-40 mg/d
Uric Acid, Urine: By report (reports may vary based on instrumentation)
Potassium, Urine: 25-125 mmol/d
Creatinine (24-hour:) Refer to report
Chloride, Urine: 140-250 mmol/d
Phosphorus, Urine: 400-1300 mg/d

Performing Laboratory
ARUP Laboratories



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.