Selenium

What it measures

• SeleniumLOINC 5724-0

Before the visit

Patient should refrain from taking vitamins or mineral supplements at least three days prior to specimen collection.

Specimen

Specimen

2 mL serum collected in a no additive (royal blue-top) tube in a trace-element package

Minimum volume

0.7 mL

Also accepted

Plasma collected in: EDTA (royal blue-top) tube or sodium heparin (royal blue-top) tube

Container

No additive (royal blue-top) tube in trace-element package

Temperature

Refrigerated (cold packs)

Carefully clean skin prior to venipuncture. Avoid worksite collection. Avoid hemolysis. Use the royal blue-top "Trace Metal" evacuated tube, which is available with EDTA, heparin or no additives. Do not use gel barrier tubes. Centrifuge serum or plasma specimens within 1 hour of collection. Immediately separate serum and plasma specimens from the cells into trace element collection vial(s).

Turnaround

Set up: Tues, Fri