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Lab Manual for Moffitt-Long and Mount Zion

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Selenium, plasma

Item Value
Approval req'd? No
Available Stat? No
Test code SE
Test group Selenium
Performed by Quest
Sendout? Yes
Method Atomic Absorption Spectroscopy
Patient Preparation Patient should refrain from taking vitamins or mineral supplements at least three days prior to specimen collection.
Collection Instructions Be sure to gently mix the specimen promptly after phlebotomy.

Click here for detailed instructions for collecting samples for Trace Metals
Container type Navy blue top (EDTA) tube
Amount to Collect 4 mL blood
Sample type EDTA plasma
Preferred volume 2 mL plasma
Min. Volume 0.7 mL plasma
Processing notes Centrifuge the Navy Blue-EDTA tube within 1 hour of collection and pour off the plasma into a plastic trace element shipping container supplied by reference laboratory. Freeze plasma at -20C. Ship frozen. Order Quest # 5507
Units µg/L (mcg/L)
Normal range
< 2 years 16-71 µg/L
2-3 years 40-103 µg/L
4-16 years 55-134 µg/L
> 16 years 63-160 µg/L
Stability
Room temperature 8 hours Refrigerated 14 days
Froze 1 month
Turn around times Test performed Tuesday and Friday. Turnaround time: 2-4 days.
Additional information To convert µg/L to µmol/L (SI units) multiply by 0.0127.

Selenium is an essential trace element, and is commonly used in industry such as semiconductors, ceramics, glass, and rubber. It is important to monitor its level for health and for avoiding selenosis, especially when it is used as an element of parenteral nutrition. Concentrations are also monitored in children with propionic acidemia who require special diets with supplements.
LOINC code 5724-0
Last Updated 12/9/2013 2:18:37 PM
Entry Number 848

If you have additional questions regarding this test, please call: 415-353-1667

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