Veterinary Toxicology – Key Laboratory Findings

15 question-and-answer flashcards covering major poisons, recommended laboratory tests, and characteristic findings from the lecture notes.

Which two coagulation tests are prolonged in Dicumarol (anticoagulant) toxicosis while platelet count remains normal?

OSPT (one-stage prothrombin time) and APTT (activated partial thromboplastin time).

In organophosphate (OP) poisoning, whole-blood cholinesterase activity usually falls below what percentage of normal?

Less than 25 % of normal activity.

What renal chemistry change is characteristic of mercury poisoning?

Azotemia with elevated BUN and creatinine.

Which poison commonly produces azotemia accompanied by calcium oxalate crystals in the urine?

Ethylene glycol toxicity.

Thallium intoxication is best monitored with which serum chemistry change?

Azotemia (increased BUN and creatinine).

Pigs with salt toxicity typically show serum sodium levels above what concentration?

Greater than 160 mEq/L.

What pattern of white-blood-cell changes is expected on a CBC during salt poisoning in pigs?

A stress leukogram.

Which two laboratory parameters confirm iron intoxication?

Marked hyperferremia (high serum iron) and elevated liver enzymes.

The presence of basophilic stippling on a blood smear is suggestive of which heavy-metal poisoning?

Lead poisoning.

In ruminant urea toxicity, what happens to rumen pH and blood ammonia levels?

Rumen pH rises above 7.5 and blood ammonia increases.

Elevated methemoglobin levels are the key laboratory finding in what type of poisoning?

Nitrate/nitrite poisoning.

Which toxin produces anemia together with increased liver-enzyme activity on a CBC/chemistry panel?

Selenium.

Non-regenerative anemia, leukopenia, thrombocytopenia but normal clotting times are typical of poisoning by which plant?

Bracken fern.

Molybdenum excess causes what type of anemia on a CBC?

Microcytic, hypochromic anemia.

Copper toxicosis in animals is typically associated with which red-blood-cell abnormality?

Hemolytic anemia.