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
- 13467-6
- 2161-8
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 |