Casandra
Casandra Test Code QD27670Version 1 (DRAFT)
Performing Lab
Selenium, Random Urine with Creatinine
Clinical Use
Order TestUse
Assessment of selenium exposure via measurement of urinary selenium and normalization to creatinine. Selenium is an essential trace element; urinary selenium is used to monitor exposure and assess body burden.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Creatinine, Random Urine
AnalyteCreatinine, Random Urine
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Selenium
AnalyteSelenium
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Selenium/Creatinine Ratio
AnalyteSelenium/Creatinine Ratio
Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
LOINC Codes
Result Codes
- 5726-5 - Selenium Ur-mCnc
- 13467-6 - Selenium/Creat Ur
- 2161-8 - Creat Ur-mCnc
Result Turnaround Time
3-6 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Urine
Volume
7 mL
Minimum Volume
7 mL
Container
acid-washed plastic container
Collection Instructions
Collect urine in an acid-washed plastic container. Avoid worksite collection.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 5 days |
| Refrigerated | 14 days |
| Frozen | 30 days |
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