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Laboratory: Clinical Biochemistry
Test Name:
Test Code: SEWB
Clinical Information:
Test Indications:  Testing for Selenium is for the monitoring of patients undergoing TPN nutritional support and is available to gastroenterologists, general and bariatric surgeons.
Selenium is a trace element that has a key role in antioxidant, anti-inflammatory and immunological activities. Nutritional guidelines recommend monitoring of selenium in patients receiving parenteral nutrition support. Measurement of whole blood selenium is more accurate than plasma or serum levels.
MUST specify "Selenium Whole Blood" on test request form when ordering.
See: Trace Elements in Parenteral Nutrition: Considerations for the Prescribing Clinician. Nutrients 2017, 9, 440;doi:10.3390/nu9050440
Collection Devices:
Specimen Required:
Blood: 6.0 mL

Serum samples not acceptable. Do not use gel separator collection tubes.
Whole Blood: 6.0 mL

Store and send refrigerated.
Reference Values:
Within 3 Weeks
See Also:
More Information:
Do not centrifuge. Whole blood required. Specify Selenium Whole Blood on test request form. Store and send refrigerated in original trace element collection tube to In-Common Laboratories.