One or more of the following:
1) 1.0 mL serum in non-additive tube AND EDTA whole blood.
2) 5 grams of fresh liver sample in sealed, leak-proof container.
3) 50 mg fresh liver biopsy (3 Tru-Cut samples, no fluid added) in sealed, leak-proof container.
4) 500 grams of feed (representative sample) in sealed container.
Test Description
Serum: Cobalt, Copper, Iron, Manganese, Molybdenum, Selenium, and Zinc.
EDTA Whole Blood: Arsenic, Cadmium, Lead, and Thallium.
Serum selenium provides current‑day levels, while whole blood selenium indicates selenium status over a longer period of time.