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HelpTest Code SULFU Sulfate, 24 Hour, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Sulfate, 24 Hr, USpecimen Type
UrineNecessary Information
24-Hour volume (in milliliters) is required.
Specimen Required
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Container/Tube: Plastic, 5-mL urine tube
Specimen Volume: 4 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Collection instructions with no preservative:
-Specimen must be kept refrigerated during and after collection.
3. Collection instructions with preservative:
a. If preservative is not added before collection, the specimen must be kept refrigerated until preservative is added.
b. Preservative must be added within 4 hours of the end of collection.
4. Specimen pH should be between 4.5 and 8 and will stay in this range if kept refrigerated. Specimens with pH >8 indicate bacterial contamination, and testing will be cancelled. Do not attempt to adjust pH as it will adversely affect results.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 14 days |
| Frozen | 14 days |
Specimen Minimum Volume
1 mL
Special Instructions
Day(s) Performed
Monday through Friday
Specimen Retention Time
7 daysReport Available
1 to 3 daysReference Values
7-47 mmol/24 hours
Useful For
Assessing the nutrition intake of animal protein
The calculation of urinary supersaturation of various crystals or stones
CPT Code Information
84392
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SULFU | Sulfate, 24 Hr, U | 26889-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| SLF_U | Sulfate, 24 Hr, U | 26889-6 |
| TM89 | Collection Duration | 13362-9 |
| VL71 | Urine Volume | 3167-4 |
| SUL_C | Sulfate Concentration, 24 Hr, U | 12920-5 |
Method Description
A high pressure ion chromatography system (HPICS) utilizes an anion exchange column to separate sulfate from other anions present in urine. Detection of sulfate is done by conductivity change as eluent flows through a conductivity cell of a conductivity detector. The Thermo IC system is operated through a PC computer using thermo Chromeleon 7 software.(Christison T, Lopez L. Determination of Inorganic Anions in Acid Rain Using a Dedicated High-Pressure Capillary Ion Chromatography System. Technical Note 124 Thermo Scientific; 2016)
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.