All TVMDL locations will be closed on Monday, May 26 in observance of Memorial Day. Normal hours will resume on Tuesday, May 27. Please schedule sample shipments with these hours in mind. As a reminder, the College Station and Canyon labs offer a sample drop off area that is open 24/7/365.
Measurement of selenium by inductively-coupled plasma/mass spectrometry. A $11.25 sample preparation fee will be added to tissue and feed specimens.
Specimen
One or more of the following:
1 mL EDTA whole blood
5 g fresh liver
50 mg fresh liver biopsy (at least 3 Tru-Cut samples, no fluid added)
2 mL serum or plasma
500 g feed
For birds, 0.6 mL EDTA whole blood is adequate.
Blood, serum, and urine samples are tested on Mondays, Wednesdays, and Thursdays with a turnaround time of 7 days. Tissue and feed samples are tested on Mondays and Thursdays with a turnaround time of 10 days.
Measurement of thallium by inductively-coupled plasma/mass spectrometry. A $11.25 sample preparation fee will be added to tissue and feed specimens.
Specimen
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.
Blood, serum, and urine samples are tested on Mondays, Wednesdays, and Thursdays with a turnaround time of 7 days. Tissue and feed samples are tested on Mondays and Thursdays with a turnaround time of 10 days.
Follow up test for TVMDL’s toxin screens to provide quantitation for carbamates, cantharidin, ethylene glycol, glycolic acid, or metaldehyde. Measurement is performed by gas chromatography/mass spectrometry.
Measurement of trace minerals by inductively-coupled plasma/mass spectrometry. Targets include copper, cobalt, iron, manganese, molybdenum, selenium, and zinc. A $11.25 sample preparation fee will be added to tissue and feed specimens.
Specimen
One or more of the following*:
both 0.5 mL EDTA whole blood and 1 mL serum (both sample types are required)
For birds, 0.6 mL EDTA or heparinized whole blood is adequate.
*Serum selenium provides current day levels, while whole blood selenium indicates selenium status over a longer period of time. TVMDL can interpret both serum and whole blood selenium concentrations for cattle, horses, sheep, birds or white-tailed deer. For goats, TVMDL has reference values for serum or plasma only.
Blood, serum, and urine samples are tested on Mondays, Wednesdays, and Thursdays with a turnaround time of 7 days. Tissue and feed samples are tested on Mondays and Thursdays with a turnaround time of 10 days.