bovine

One or more of the following: 

• 0.50 mL EDTA whole blood or heparinized blood
• 5 g fresh liver
• 50 mg fresh liver biopsy (at least 3 Tru-Cut samples, no fluid added)
• 500 g feed
• 5 mL water

For birds, 0.30 mL EDTA whole blood is adequate.

One or more of the following: 

• 2 cups to 1 quart of GI content
• 20 mL water
• 500 g feed
• 2-4 flakes hay
• 10 g bait material

One or more of the following: 

• 1 mL serum/plasma +/- 0.5 mL EDTA whole blood*
  • For birds, 0.6 mL EDTA or heparinized whole blood is adequate.
• 5 g fresh liver
• 50 mg fresh liver biopsy (approx. 3 Tru-Cut samples, no fluid added)
• 500 g feed

 *Serum/plasma samples are required for this panel. Whole blood may be useful to evaluate chronic selenium status, as concentrations reflect selenium exposure over an extended period. Serum/plasma selenium provides information on real time concentrations only. TVMDL provides reference intervals for both serum/plasma and whole blood selenium for cattle, horses, sheep, birds, and white-tailed deer. For goats, TVMDL has reference intervals for serum/plasma only.