Supersaturation Profile, Self-Collect, 24 Hour, Urine
Use
The test is used for the diagnosis and management of patients with renal lithiasis. It predicts the likely composition of the stone in patients with radiopaque stones when stone analysis is unavailable. This test can aid in designing treatment programs and identifying specific risk factors for stones using a 24-hour urine collection. It is also useful for monitoring the effectiveness of therapy by confirming decreased crystallization potential, evaluating kidney excretion of acid, urine pH, and estimating protein intake.
Special Instructions
Not provided.
Limitations
X-ray dyes and contrast media can affect uric acid test results, and therefore, should be avoided before specimen collection. Patients should wait specified times after certain radiological procedures before starting the urine collection to avoid interference.
New York Approved
Methodology
Culture-based
Biomarkers
LOINC Codes
- 81232-1 - Supersaturation Pnl 24h Ur
- 2162-6 - Creat 24h Ur-mRate
- 25308-8 - Ammonia 24h Ur-sRate
- 6874-2 - Calcium 24h Ur-mRate
- 6687-8 - Citrate 24h Ur-mRate
- 14862-7 - Oxalate 24h Ur-sRate
- 2701-1 - Oxalate 24h Ur-mRate
- 2079-2 - Chloride 24h Ur-sRate
- 8277-6 - BSA
- 3137-7 - Body height Measured
- 29463-7 - Weight
- 2829-0 - Potassium 24h Ur-sRate
- 24447-5 - Magnesium 24h Ur-mRate
- 2956-1 - Sodium 24h Ur-sRate
- 2694-8 - Osmolality 24h Ur
- 93746-6 - Protein catabolic rate 24h Ur-mRate
- 2779-7 - Phosphate 24h Ur-mRate
- 26889-6 - Sulfate 24h Ur-sRate
- 3096-5 - UUN 24h Ur-mRate
- 27378-9 - pH 24h Ur
- 3087-4 - Urate 24h Ur-mRate
- 69051-1 - Urinalysis specialist review
- 81623-1 - CaOx 24h EngDiff Ur
- 101825-8 - Ca H2 Phos dihyd Cry 24h SatFr Ur
- 81622-3 - Hydroxyapatite 24h EngDiff Ur
- 101827-4 - Urate cry 24h SatFr Ur
- 13362-9 - Specimen collect Time Ur
- 3167-4 - Specimen vol 24h Ur
Result Turnaround Time
2-5 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
35 mL
Minimum Volume
16 mL
Container
24-hour graduated urine container with no metal cap or glued insert
Collection Instructions
Order test each time the patient is to collect a 24-hour urine specimen at home and mail the specimen directly to Mayo Clinic Laboratories. The order should be placed a minimum of 3 days before the desired collection date. The SSH24 Home Collection kit will be mailed directly to the patient for self-collection.
Patient Preparation
If a kidney X-ray with dye or CT scan with contrast has been performed, the patient should wait at least 24 hours before starting collection. Wait 7 days after cholangiography or gallbladder X-ray tablets.
Storage Instructions
Transport the specimen refrigerated (preferred) within 14 days. Ambient conditions are acceptable for up to 72 hours, and frozen for up to 14 days.
Causes for Rejection
Reject if pH 8.0
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 14 days |
| Frozen | 14 days |