ACTUAL EXAM QUESTIONS WITH CORRECT
ANSWERS GRADED A+ TESTED AND
APPROVED 2025/2026 NEWLY MODIFIED
how is hypothyroidism diagnosed --ANSWER--High TSH, Low T4 and T3
Total T4 screening- low resting levels
Free T4 by electrodialysis
TSH stim test- non responsive T3/T4, high TSH
what are 3 bloodwork abnormalities seen with hypothyroidism --ANSWER--1
hypercholesterolemia
2 elevated CL
3 non regenerative anemia
what is the most common cause of hypothyroidism --ANSWER--1 95% thyroid
problem (idiopathic atrophy)
2 pituitary problem- no TSH
3 hypothalamic- no TRH
a dog presents with a history of PUPD and nocturia. owners are very sure this is
not behavioral. there is no glycosuria and no azotemia. CBC chem UA are
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,normal aside from a USG of 1.006. what is your top differential and what
diagnostic test would you run --ANSWER--diabetes insipidus
water deprivation test- only psychogenic can concentrate
water + ADH- central concentrates
gradual water deprivation- medullary wash out
what are at least 2 possible causes of diabetes inspidus --ANSWER--1
nephrogenic DI- inability of renal tubules to respond to ADH
2 central pituitary DI- problem with ADH release
3 central hypothalamus DI-problem with ADH vasopressin production
4 psychogenic- excessive water intake, disorder of thurst centers
production/ release of vasopressin is controlled by serum ____ and blood
volume --ANSWER--osmolality
treatment of choice for central diabetes insipidus --ANSWER--vasopressin,
unlimited water
name at least 3 abnormalities on bloodwork you would expect to see in a dog
with cushings disease --ANSWER--1 stress leukogram
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,2 elevated PCV
3 elevated ALP
4 elevated cholesterol
5 elevated glucose
6 low BUN
7 low USG
what is the most common cause of cushing disease in dogs --ANSWER--85%
pituitary dependent (pituitary gland adenoma)
15 % adrenal gland hyperplasia (50/50 benign/ malignant)
Low dose dex diagnostic shows that cushing's is pituitary dependent if
(low/high) at 4 hours and (low/high) at 8 hours --ANSWER--low at 4 hours
high at 8 hours
name at least 3 blood work abnormalities consistent with addison's disease --
ANSWER--1 Na:K < 27
2 elevated calcium
3 low chloride
4 low glucose
5 low USG
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, what is the most common cause of addison's disease --ANSWER--1 primary
adrenal problem- idiopathic/ immune mediated attack of adrenals
2 pituitary ACTH deficiency- iatrogenic
name at least 4 differentials for hypercalcemia --ANSWER--1 excesss vit D
2 Renal
3 addison's
4 growing/ granulomatous
5 osteolytic
6 neoplasia
7 hyperparathyroidism
name at least 1 way to treat hypercalcemia, aside from addressing the
underlying cause --ANSWER--1 calcitonin- hypeprvitaminosis D
2 sodium bicarb - Decreases ionized calcium levels
3 IV fluids NaCl
4 dex/ pred- steroids dec Ca absorption in gut, promote calciuresis
5 furosemide - if well hydrated
what is your top differential and diagnostic test of choice for a dog with:
- extreme 9/10 pruritis
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