VTNE Clinical Laboratory Procedures Questions and Answers

Question 1

A complete blood count (CBC) from an anemic dog is analyzed. Which finding on a Wright-Giemsa stained blood smear is the most definitive indicator of a regenerative bone marrow response?

Accepted Answer

Significant polychromasia

Answer

Presence of spherocytes

Answer

Numerous target cells (codocytes)

Answer

Occasional Howell-Jolly bodies

Question 2

A veterinary technician examines a urine sediment sample from a 7-year-old male Dalmatian and observes numerous flat, six-sided, colorless crystals. This finding is most consistent with which type of crystal?

Accepted Answer

Uric Acid

Answer

Struvite

Answer

Calcium Oxalate Dihydrate

Answer

Calcium Carbonate

Question 3

Which of the following serum chemistry tests is considered the most specific indicator of hepatocellular (liver cell) damage in dogs and cats?

Accepted Answer

Alanine Aminotransferase (ALT)

Answer

Alkaline Phosphatase (ALP)

Answer

Blood Urea Nitrogen (BUN)

Answer

Total Bilirubin

Question 4

A technician is performing a Gram stain on a sample from an ear swab. After applying the crystal violet and iodine, they accidentally rinse the slide with the alcohol decolorizer for too long. How will this error most likely affect the appearance of Gram-positive bacteria on the slide?

Accepted Answer

They will appear pink or red.

Answer

They will appear purple, as expected.

Answer

They will form chains instead of clusters.

Answer

They will be completely washed off the slide.

Question 5

When performing a fecal flotation, which of the following solutions is commonly used because its specific gravity allows most common parasite eggs to float while causing heavier debris to sink?

Accepted Answer

Sodium Nitrate

Answer

Distilled water

Answer

70% Isopropyl alcohol

Answer

Sodium hypochlorite

Question 6

A veterinary technician uses a handheld refractometer to measure a patient's urine specific gravity. What is the underlying physical principle that allows this instrument to provide a measurement?

Accepted Answer

The bending of light as it passes through a fluid containing dissolved solids.

Answer

The absorption of specific light wavelengths by solutes.

Answer

The electrical impedance created as cells pass through an aperture.

Answer

The scattering of a light beam by suspended particles.