Selenium, Blood
Test Code
Clinical Significance
Selenium, Blood - Selenium (Se) is a key component of a number of functional selenoproteins required for normal health. The best known of these are the antioxidant glutathione peroxidase enzymes, which remove hydrogen and damaging lipid and phospholipid hydroperoxides generated in vivo by free radicals and other oxygen-derived species. If not removed, lipid hydroperoxides impair membrane structure and function and cause blood-clotting disturbances by decreasing the production of prostacyclin while increasing the production of thromboxane.
Test Resources
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Test Details
Methodology
Reference Range(s)
| <20 years | Not established |
| 20-50 years | 115-240 mcg/L |
| >50 years | 100-250 mcg/L |
Preferred Specimen(s)
2 mL whole blood collected in an EDTA trace metal-free (royal blue-top) tube
Alternative Specimen(s)
Sodium heparin trace metal-free (royal blue-top) tube
Tests performed on a specimen submitted in a non-trace element tube or non acid washed/non metal free container may not accurately reflect the patient's level. If a non-trace element tube/container is received, it will be accepted for testing. However, elevated results shall be reported with a message that a re-submission with a trace element tube/container is recommended.
Minimum Volume
1 mL
Collection Instructions
Carefully clean skin prior to venipuncture. Avoid worksite collection
Transport Container
EDTA trace metal-free (royal blue-top) tube
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 30 days
Refrigerated: 30 days
Frozen: 30 days
Setup Schedule
Tests performed on a specimen submitted in a non-trace element tube or non acid washed/non metal free container may not accurately reflect the patient's level. If a non-trace element tube/container is received, it will be accepted for testing. However, elevated results shall be reported with a message that a re-submission with a trace element tube/container is recommended.
Refrigerated: 30 days
Frozen: 30 days