Selenium : 5507

SELENM or 5507

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

Preferred: 2 mL serum collected in a no additive (royal blue-top) tube in a trace-element package
Minimum: 0.7 mL
   
Alternative: Plasma collected in: EDTA (royal blue-top) tube or sodium heparin (royal blue-top) tube

Refrigerated.

Room temperature: 8 hours; Refrigerated: 14 days; Frozen: 30 days

Hemolysis

Tuesday, Friday

1-5 days

Laboratory test results should always be considered in the context of clinical observations. This test was developed and its performance characteristics determined by med fusion. It has not been cleared or approved by the U.S. Food and Drug Administration  (FDA). The FDA has determined that such clearance or approval is not necessary. This test is used for clinical purposes. It should not be regarded as investigational for research. This laboratory is certified under the Clinical Laboratory Improvement Amendments  of 1988 (CLIA) as qualified to perform high complexity clinical laboratory testing.

Selenium is an element of parenteral nutrition. Monitoring the Selenium concentration is useful in assessing parenteral nutrition, especially recent intake. Concentrations are also monitored in children with propionic acidemia who require special diets with supplements.