Pharmacy and Pharmacology

13% of the VTNE · blueprint VTNE content outline approved by the AAVSB Board, March 2023

Short answer

Pharmacy and Pharmacology is 20 of the 150 scored VTNE items. It covers preparing and dispensing medications in compliance with veterinary orders, calculating doses, fluid rates and continuous rate infusions, recognising drug classifications and mechanisms with their clinically relevant side effects, maintaining controlled-drug inventory and logbooks, and storing, handling and disposing of pharmacological, chemical and biological agents safely.

Why it matters on this exam

This domain carries the calculation items, which are the slowest questions on the paper. Fluency here protects your pace everywhere else.

Key concepts

Dose calculation: dose (mg/kg) × weight (kg) ÷ concentration (mg/mL) = volume (mL). Convert pounds to kilograms first (÷ 2.2).
Fluid rates: mL/hour to drops per minute using the drip-set factor; maintenance versus replacement versus ongoing losses.
CRIs: work in consistent units, and check the answer's order of magnitude before writing it down.
Drug classes: opioids, NSAIDs, alpha-2 agonists, phenothiazines, benzodiazepines, antimicrobials, anthelmintics — with the side effects a technician monitors for.
Controlled drugs: logging every administration and waste, reconciliation, secure storage, and the technician's role in compliance.
Safety: chemotherapy handling, safe disposal, and personal protective equipment.

Common mistakes

Forgetting the pound-to-kilogram conversion, which produces an answer 2.2 times too large.
Recording a controlled-drug waste without a witness where the protocol requires one.

Worked example

A 44 lb dog needs 2 mg/kg of a drug supplied at 50 mg/mL. 44 ÷ 2.2 = 20 kg; 20 × 2 = 40 mg; 40 ÷ 50 = 0.8 mL. An answer near 1.76 mL means the weight conversion was skipped.

Original practice questions

Pharmacy and PharmacologyDifficulty 3/5

A 44 lb dog is prescribed 2 mg/kg of a drug supplied at 50 mg/mL. What volume should be drawn?

A0.4 mL, using half the calculated dose for safety
B2.0 mL, rounding the dose up to the nearest whole millilitre
C1.76 mL, using the dog's weight in pounds for the calculation
D0.8 mL, after converting the weight to 20 kilograms

Show answer and rationale

Correct: D. 44 lb ÷ 2.2 = 20 kg. 20 kg × 2 mg/kg = 40 mg. 40 mg ÷ 50 mg/mL = 0.8 mL. Skipping the pound-to-kilogram conversion inflates the answer 2.2-fold.

C — That result comes from using pounds directly as kilograms.
A — Halving a prescribed dose is not the technician's decision.
B — Rounding to a whole millilitre overdoses the patient by 150%.

Pharmacy and PharmacologyDifficulty 2/5

What is required when a portion of a controlled drug is not administered and must be discarded?

ARecord the waste in the controlled-drug log according to practice protocol
BReturn the remaining drug to the original vial for later use that day
CDiscard it in general waste and note the full dose as administered
DRetain the syringe in the controlled-drug safe until the end of the shift

Show answer and rationale

Correct: A. Controlled-drug waste must be documented in the log, with a witness where the protocol or jurisdiction requires it. Returning drug to a vial, mis-recording administration or holding an unlabelled syringe all breach handling requirements.

B — Returning drawn drug to a vial risks contamination and is not permitted.
C — Recording an unadministered dose as given falsifies the record.
D — Retaining an unlabelled syringe does not satisfy documentation requirements.

All 2 Pharmacy and Pharmacology questions →

Tools for this topic

VTNE pacing calculator — The VTNE gives you 180 minutes for 170 questions — 150 scored plus 20 pilot questions you cannot identify. This works out the per-question pace and tells you whether a practice attempt is ahead or behind at any point.

2 flashcards for Pharmacy and Pharmacology

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Primary references

VTNE Candidate Information Handbook — American Association of Veterinary State Boards (AAVSB) · primary · retrieved 2026-09-22, verified 2026-09-22

Last reviewed: 2026-09-22Next review by: 2026-11-06Draft — pending editorial reviewHow we verify facts