Results 26–50 of 98 for "toxicology."

26. Nitrate toxicity in a herd of cattle

    ...ne, serum and water. In this case, ocular fluid and serum were sent to the toxicology lab for testing. Both were strongly positive. This coupled with gross necropsy findings provided a rapid diagnosis of nitrate toxicity. It was later learned that the check valve that prevents the fertilizer from entering into the irrigation system was faulty. This allowed the cattle to be unintentionally exposed to high levels of nitrates from the fertilizer. Sou...

27. Bromethalin poisoning in a feline

    ...y Medical Diagnostic Laboratory (TVMDL) for histopathologic evaluation and toxicology testing. Following a negative rabies test, a portion of fixed brain was examined and the white matter of the cerebrum, cerebellum and brainstem were found to exhibit moderate diffuse spongiosis. White matter spongiosis with no inflammatory response is the central nervous system lesion associated with bromethalin intoxication. No significant microscopic lesions we...

28. Arsenic toxicosis in two calves

    ...myocardial sarcocysts. The remaining organs were relatively unremarkable. Toxicology testing determined the ocular fluid was negative for nitrate/nitrite and the rumen content did not contain detectable organic pesticides by GC/MS. A metal & mineral panel performed on the liver found an arsenic concentration of 109.74 µg/g on a dry weight basis. Bovine liver arsenic concentrations are normally below 2 µg/g dry weight, and concentrations over 8 µg...

29. Chlorinated hydrocarbon and arsenic poisoning in cattle

    ...ecropsy. Rumen content and fresh liver were collected and submitted to the toxicology section for chemical analysis. A comprehensive metals profile was performed on the fresh liver using inductively coupled plasma mass spectrometry (ICP-MS). A toxic amount of arsenic (77.66 micrograms per gram dry weight) was measured in the liver by ICP-MS. Further testing to identify the source of the arsenic (organic vs. inorganic) was not pursued. A toxic chem...

30. Disease Surveillance

    ...CVM) with large-scale investigations of CVM-regulated products, such as animal feed or drugs. Our Commitment to Vet-LIRN TVMDL is committed to offering an additional level of extensive subject matter expertise and physical capabilities in toxicology, pathology, and microbiology to Vet-LIRN. TVMDL serves as a reference center for other state laboratories for some relevant tests therefore our addition to the Vet-LIRN actually means surveillance incr...

31. Nitrate Poisoning in Cattle

    ...testing services, visit tvmdl.tamu.edu or call 1.888.646.5623. Reference: Nicholson, SS. Nitrate and nitrite accumulating plants. Veterinary Toxicology: Basic and clinical principles. 2007, 876-879....

32. Strychnine detected in a puppy

    ...strychnine test visit tvmdl.tamu.edu or call 1.888.646.5623. References: 1 Gupta, Ramesh C. “Non-anticoagulant rodenticides: Strychnine.” Veterinary Toxicology, edited by Ramesh C. Gupta, Elsevier Inc., 2007, pp. 548-550....

33. TVMDL joins Veterinary Laboratory Investigation and Response Network

    ...t-LIRN its extensive subject matter expertise and physical capabilities in toxicology, pathology, and microbiology along with one of the largest caseload volumes in the nation,” Akey said. “TVMDL serves as a reference center for other state laboratories for some relevant tests therefore its addition to the Vet-LIRN actually means surveillance increases not just for one state, but many.” In addition to furthering TVMDL’s impact, joining Vet-LIRN wi...

34. Cyanobacteria: No winter break this year

    ...first step is always to decontaminate. For more information about TVMDL’s toxicology services, visit tvmdl.tamu.edu or call the College Station laboratory at 1.888.646.5623. Figure 1. Blue-green algae sample undisturbed. Figure 2. Blue-green algae sample after being disturbed. Figure 3. Photomicrograph depicting microcystis in submitted water sample. Figure 4. Photomicrograph depicting microcystis colonies in submitted water sample. Enlarged 200x...

35. Coffee Senna Poisoning in Cattle

    ...ne calf. Microscopic examination of the rumen content was performed by the toxicology section at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station. Coffee senna seed pod fragments and leaf material was observed in the rumen content from both calves. No evidence of consumption of nightshade or cocklebur was observed in either animal. Histopathology was performed on fixed tissues, including skeletal muscle, liver, kid...

36. Pyrrolizidine Alkaloid Toxicity in a mature brangus cow

    ....” Merck Manual, Merck & Co., Inc., October 2013, merckvetmanual.com/en-ca/toxicology/pyrrolizidine-alkaloidosis/overview-of-pyrrolizidine-alkaloidosis. Joaquín Tamariz, et al. The Alkaloids: Chemistry and Biology, Volume 80; Hans-Joachim Knölker, editor. 2018. Pgs. 1-314. Cullen, J.M., & Stalker, M.J. (2016). Liver and Biliary system. In M.G. Maxie (Ed.), Jubb, Kennedy and Palmer’s pathology of domestic animals (6th ed., pp. 336-338). St. Louis,...

37. Salt Toxicity in Broilers

    ...s of vacuolation in the cerebellar white matter and cerebrum (see Fig. 1). Toxicology analysis on five brain samples revealed high levels of sodium in all of them, with a range from 8,810 ppm to 14,300 ppm. Sodium levels above 7,600 ppm in the brain of chickens are considered toxic. For more information on this case, contact Center Resident Director Dr. Senties-Cue. To learn more about TVMDL’s test offerings, visit tvmdl.tamu.edu or call 1.888.646...

38. Travis Mays, MS, PhD

    ...nd routine diagnostic testing such as the Equine Pre-Purchase Drug Screen. He is also knowledgeable and trained to provide information related to mycotoxins, toxicities associated with forages and grasses, poisons and many other toxicology-related questions. He also serves as a subject matter expert in microscopic identification of toxic plants in GI contents. He is the Analytical Chemistry Section Head, a section that comprises drug testing and t...

39. Five employees honored with Director’s Excellence Awards

    ...osario, Poultry Programs Administrator | College Station Bailey Schulz, Administrative Coordinator | College Station Professional Dr. Guy Sheppard, Veterinary Diagnostician | College Station Technical Malerie Larson, Toxicology Technician | College Station Student Sydney Buckner, Necropsy Student Assistant | Canyon Learn more about TVMDL by visiting tvmdl.tamu.edu or calling one of the agency’s four laboratory locations....

40. Three TVMDL professionals present at Southwest Veterinary Symposium

    ...for representing the agency at this year’s SWVS. Dr. Cat Barr, Veterinary Toxicologist Feed-Associated Toxin and Nutritional Testing, Ruminant Focus Frequent Plant Poisonings, Ruminant Focus Mindy Borst, Clinical Pathology Assistant Section Head Proper Parasitology Procedures Is it a Parasite? Common Parasites, Pseudoparasites, and Missed Diagnoses in Small Animals Is it a Parasite? Common Parasites, Pseudoparasites, and Missed Diagnoses in Large...

41. Arsenic – Inorganic (Reinsch)

    Detection of arsenic salts by the qualitative Reinsch test. Targets include calcium arsenate, lead arsenate, and lead arsenate.

42. Drug Screen – Cannabinoids (LC/MS)

    Detection of tetrahydrocannabinol (THC), cannabidiol (CBD), their major metabolites, and a variety of synthetic cannabinoids by liquid chromatography/mass spectrometry. 

43. Chloride (Colorimetric)

    Measurement of chloride by colorimetric analysis.

44. Glyphosate (GC/MS)

    Detection of glyphosate and aminomethylphosphonic acid (AMPA) by gas chromatography – mass spectrometry (GC/MS).

45. Bromide (UV/Vis)

    Measurement of bromide ion. This test is useful for therapeutic drug monitoring on animals being treated with potassium or sodium bromide.

46. Strychnine (LC/MS)

    Qualitative detection of strychnine using liquid chromatography – tandem mass spectrometry (LC-MS/MS). 

47. Cantharidin (LC/MS)

    Detection of cantharidin, the toxic chemical produced by blister beetles, by liquid chromatography/mass spectrometry.

48. Arsenic (ICP/MS)

    Measurement of arsenic by inductively-coupled plasma/mass spectrometry. A $10.75 sample preparation fee will be added to tissue and feed specimens.

49. Bromethalin (LC/MS)

    Detection of desmethylbromethalin, the toxic metabolite of bromethalin, by liquid chromatography/mass spectrometry.

50. Cadmium (ICP/MS)

    Measurement of cadmium by inductively-coupled plasma/mass spectrometry. A $10.75 sample preparation fee will be added to tissue and feed specimens.