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100+ Free VTS (Laboratory Animal) Practice Questions

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Which species are EXCLUDED from the USDA Animal Welfare Act definition of 'animal'?

A
B
C
D
to track
2026 Statistics

Key Facts: VTS (Laboratory Animal) Exam

100

Written Exam Questions

ALAVTN

~$300

2026 Exam Fee

ALAVTN

3+ years

Minimum Lab Animal Experience

ALAVTN

40+

Required Case Logs

ALAVTN

40+ hrs

Required Lab Animal CE

ALAVTN

3 Rs

Russell & Burch 1959

The Guide

The VTS (Laboratory Animal) is a written specialty examination administered by the Academy of Laboratory Animal Veterinary Technicians and Nurses (ALAVTN). Eligible candidates must be credentialed veterinary technicians (CVT/LVT/RVT) with 3+ years of laboratory animal practice, a minimum of 40 case logs, detailed case reports, and 40+ hours of laboratory-animal continuing education. The exam covers rodents, rabbits, nonhuman primates, swine, dogs, cats, zebrafish, and other research species, plus the regulatory framework (AWA, PHS Policy, The Guide, AAALAC, IACUC, OLAW), anesthesia/analgesia, euthanasia, genetics and model systems, biosecurity, zoonoses, and occupational health. The 2026 exam fee is approximately $300.

Sample VTS (Laboratory Animal) Practice Questions

Try these sample questions to test your VTS (Laboratory Animal) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which species are EXCLUDED from the USDA Animal Welfare Act definition of 'animal'?
A.Dogs and cats used in research
B.Guinea pigs and hamsters
C.Purpose-bred rats, mice, and birds
D.Nonhuman primates
Explanation: The AWA specifically excludes rats of the genus Rattus and mice of the genus Mus bred for research, as well as birds, from its definition of 'animal.' These species are still covered under PHS Policy and The Guide, but USDA does not inspect or regulate them.
2Who originated the concept of the 3 Rs (Replacement, Reduction, Refinement)?
A.Russell and Burch (1959)
B.National Research Council (1963)
C.Pasteur and Koch (1885)
D.USDA (1966)
Explanation: W.M.S. Russell and R.L. Burch introduced the 3 Rs in their 1959 book 'The Principles of Humane Experimental Technique.' Replacement substitutes animals with non-animal methods, Reduction minimizes animal numbers, and Refinement minimizes pain/distress.
3What is the minimum required composition of an IACUC?
A.A chairperson, a veterinarian, a scientist, and a public member
B.At least 3 members including a veterinarian only
C.5 members with no unaffiliated person required
D.A chairperson, a scientist, and a nonscientist
Explanation: The IACUC must include at minimum a chairperson, a veterinarian with program authority, a practicing scientist experienced in animal research, a nonscientist, and an unaffiliated (public) member. AWA requires at least 3 members and PHS Policy requires at least 5.
4USDA pain/distress category E refers to procedures that:
A.Use animals bred for research with no procedures performed
B.Cause no pain or distress
C.Cause pain or distress relieved by appropriate drugs
D.Cause pain or distress that is NOT relieved, with scientific justification
Explanation: Category E covers procedures where pain or distress is not alleviated because doing so would interfere with the study's scientific objectives. These studies require written scientific justification and special IACUC scrutiny and reporting.
5Which edition of the Guide for the Care and Use of Laboratory Animals is currently the accepted standard?
A.7th edition (1996)
B.8th edition (2011)
C.9th edition (2020)
D.6th edition (1985)
Explanation: The Guide for the Care and Use of Laboratory Animals, 8th edition, was published by the National Research Council in 2011. It is the primary reference for PHS-compliant animal care programs and AAALAC accreditation.
6How often must the IACUC conduct semiannual inspections and program reviews?
A.Every 3 months
B.Every 6 months
C.Annually
D.Every 2 years
Explanation: Both AWA and PHS Policy require the IACUC to inspect all animal facilities and review the animal care program at least once every six months. Reports of findings go to the Institutional Official.
7AAALAC International is best described as:
A.A federal regulatory agency
B.A voluntary accreditation organization
C.A congressional oversight body
D.An animal rights advocacy group
Explanation: AAALAC (Association for Assessment and Accreditation of Laboratory Animal Care) is a private, nonprofit organization that provides voluntary accreditation to research programs demonstrating quality animal care. Accreditation is not required by law but is a mark of excellence.
8OLAW (Office of Laboratory Animal Welfare) is housed within which federal agency?
A.USDA
B.FDA
C.NIH
D.EPA
Explanation: OLAW is part of the National Institutes of Health (NIH) and oversees PHS Policy implementation. Institutions receiving PHS funding must have an Assurance on file with OLAW.
9The scientific name for the laboratory mouse is:
A.Rattus norvegicus
B.Mus musculus
C.Cavia porcellus
D.Mesocricetus auratus
Explanation: Mus musculus is the house mouse, the primary laboratory mouse species. Rattus norvegicus is the Norway rat, Cavia porcellus is the guinea pig, and Mesocricetus auratus is the Syrian (golden) hamster.
10Which of the following is an INBRED mouse strain?
A.ICR (CD-1)
B.Swiss Webster
C.C57BL/6J
D.NIH Swiss
Explanation: C57BL/6J is a classic inbred strain produced by 20+ generations of brother-sister mating, making all individuals genetically nearly identical. ICR, Swiss Webster, and NIH Swiss are outbred stocks maintained for genetic heterogeneity.

About the VTS (Laboratory Animal) Exam

Advanced specialty credentialing exam for credentialed veterinary technicians pursuing Veterinary Technician Specialist status in Laboratory Animal Medicine. Administered by the Academy of Laboratory Animal Veterinary Technicians and Nurses (ALAVTN) — provisionally recognized by NAVTA's Committee on Veterinary Technician Specialties.

Questions

100 scored questions

Time Limit

4 hours

Passing Score

Set annually by Examination Committee

Exam Fee

~$300 exam + application fee (ALAVTN / NAVTA CVTS)

VTS (Laboratory Animal) Exam Content Outline

18%

Regulatory Framework & IACUC

AWA (species coverage post-2002 Farm Bill), PHS Policy, The Guide 8th ed, AAALAC, IACUC composition and duties, OLAW, USDA pain categories B/C/D/E, 3 Rs (Russell & Burch 1959)

18%

Rodent Medicine & Husbandry

Mus musculus, Rattus norvegicus (SD/Wistar/F344), hamsters, gerbils, guinea pigs; IVC vs static, bedding (corn cob/aspen, avoid cedar/pine), cage wash 82°C, common pathogens (MHV, MPV, MNV, Helicobacter, fur mites, pinworms, Mycoplasma, Sendai)

15%

Anesthesia, Analgesia & Euthanasia

Ketamine/xylazine, ketamine/medetomidine, isoflurane chamber/mask, buprenorphine dosing, meloxicam, carprofen, Mouse/Rat Grimace Scales, AVMA 2020 CO2 guidelines (30-70% displacement), pentobarbital, cervical dislocation

10%

Genetics & Model Systems

Inbred strains (C57BL/6J, BALB/c, DBA/2, FVB, 129), outbred (ICR/CD-1, Swiss Webster), F1 hybrids, coisogenic/congenic/consomic, transgenic/knockout/knockin, Cre/loxP conditional, CRISPR-Cas9, GEMM

10%

Clinical Procedures & Dosing

Blood collection (tail vein, saphenous, retro-orbital, submandibular, cardiac terminal, jugular), injections (SQ/IP/IM/IV/IC/ICV), gavage technique, volume limits by route, identification (ear tags/punches, microchips, tattoo)

8%

Nonhuman Primate Medicine

Rhesus, cynomolgus, marmosets, squirrel monkeys, TB surveillance, B virus (Macacine herpesvirus 1) zoonosis, SIV, simian varicella, Salmonella/Shigella, squeeze cage restraint, ketamine IM induction

7%

Rabbit & Other Mammal Medicine

NZW rabbit antibody production, Pasteurella multocida, E. cuniculi, atropinesterase (use glycopyrrolate), swine (Yucatan/Göttingen/Yorkshire), dogs and cats in research

6%

Biosecurity & Health Surveillance

SPF, gnotobiotic, axenic (germ-free), sentinel programs (soiled-bedding and PCR-based), BSL-1/2/3/4 and ABSL tiers, barrier facilities, quarantine, autoclave sterilization

5%

Aquatic & Alternative Species

Zebrafish (Danio rerio), Xenopus, sheep, cattle, poultry; surgical models (OVX, STZ diabetes, MCAO stroke, xenografts), aseptic rodent surgery, hot bead sterilizer

3%

Occupational Health & Zoonoses

Laboratory animal allergens (mouse urinary protein), LCM, hantavirus, Q fever, leptospirosis, toxoplasmosis, ringworm, Salmonella, rabies, B virus, PPE, respiratory protection

How to Pass the VTS (Laboratory Animal) Exam

What You Need to Know

  • Passing score: Set annually by Examination Committee
  • Exam length: 100 questions
  • Time limit: 4 hours
  • Exam fee: ~$300 exam + application fee

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

VTS (Laboratory Animal) Study Tips from Top Performers

1Memorize AWA species coverage: rats, mice, birds, and purpose-bred animals have been EXCLUDED since the 2002 Farm Bill — PHS Policy still covers them
2Know USDA pain categories cold: B = bred not yet used, C = no pain/distress, D = pain relieved, E = pain UNrelieved (requires scientific justification)
3The 3 Rs are Russell and Burch 1959: Replacement, Reduction, Refinement — this is a near-guaranteed exam question
4Avoid atropine in rabbits — atropinesterase inactivates it; use glycopyrrolate instead (same reason as zoo medicine rabbits)
5Cervical dislocation is acceptable in mice under ~200 g; larger rodents need pharmacologic euthanasia or scientific justification per AVMA 2020
6CO2 displacement rate for rodent euthanasia is 30-70% of chamber volume per minute (AVMA 2020 update) — not 100% as once taught
7Use The Guide (NRC 8th ed 2011), Fox's Laboratory Animal Medicine, and the AALAS LAT/LATG manuals as primary references

Frequently Asked Questions

What is the VTS (Laboratory Animal) exam?

The VTS (Laboratory Animal) certifying examination is a written specialty exam administered by the Academy of Laboratory Animal Veterinary Technicians and Nurses (ALAVTN). It is the final step in earning the Veterinary Technician Specialist (Laboratory Animal) credential, granted under NAVTA's Committee on Veterinary Technician Specialties (CVTS), where ALAVTN currently holds provisional recognition. The exam covers rodents, rabbits, nonhuman primates, swine, dogs, cats, zebrafish, and other research species plus the regulatory framework (AWA, PHS Policy, The Guide, AAALAC, IACUC, OLAW) that governs U.S. biomedical research.

How much does the VTS (Laboratory Animal) exam cost in 2026?

The 2026 ALAVTN examination fee is approximately $300, with an additional application fee required when credentialing materials are submitted. Candidates should also budget for laboratory-animal continuing education (minimum 40 hours), travel to the exam site (typically the AALAS National Meeting), and reference textbooks. Total out-of-pocket investment typically exceeds $500 before study materials.

Who is eligible to sit for the VTS (Laboratory Animal) exam?

Candidates must (1) be legally credentialed as a veterinary technician (CVT, LVT, RVT, or equivalent) in a US state or Canadian province, (2) have at least 3 years (typically 6,000+ hours) of laboratory-animal practice within the 5 years preceding application, (3) submit a minimum of 40 case logs across laboratory species, (4) submit detailed case reports from the case log, (5) complete at least 40 hours of laboratory-animal continuing education in the past 5 years, (6) submit the ALAVTN Skills List with documentation, and (7) obtain letters of recommendation from a VTS, ACLAM diplomate, or supervising laboratory-animal veterinarian.

When and where is the VTS (Laboratory Animal) exam held?

The ALAVTN certifying exam is held once per year, typically in conjunction with the AALAS (American Association for Laboratory Animal Science) National Meeting each fall. Exact date, city, and venue are announced by ALAVTN each cycle. The exam is a written multiple-choice format delivered in person or via approved proctored delivery. Candidates should verify the current format and deadlines on alavtn.org before applying.

What is the passing score for the VTS (Laboratory Animal) exam?

The passing score is set each year by the ALAVTN Examination Committee based on the difficulty of that year's exam. The minimum passing score is not publicly published as a fixed percentage. Candidates are typically notified of their pass/fail result within 60-90 days of the exam, and written deficiency feedback is often available on request for those who do not pass.

How should I study for the VTS (Laboratory Animal) exam?

Focus first on the regulatory framework — AWA (know which species are excluded after the 2002 Farm Bill: rats, mice, birds), PHS Policy, the 8th edition of The Guide, AAALAC accreditation standards, IACUC composition and duties, OLAW, USDA pain categories (B/C/D/E), and the 3 Rs (replacement, reduction, refinement — Russell and Burch 1959). Core references include The Guide for the Care and Use of Laboratory Animals (NRC 8th ed, 2011), the AVMA Guidelines for the Euthanasia of Animals (2020), Laboratory Animal Medicine (Fox et al.), and the ALAT/LAT/LATG Manuals from AALAS. Expect 12-18 months of dedicated preparation.

How is VTS (Laboratory Animal) different from the AALAS LATG certification?

The AALAS LATG (Laboratory Animal Technologist) is an entry-to-advanced technologist certification open to anyone working in laboratory animal science — you do not need to be a credentialed veterinary technician. The VTS (Laboratory Animal) is a veterinary technician SPECIALTY credential that requires an existing CVT/LVT/RVT plus 3+ years of lab animal experience, case logs, case reports, and CE. Many candidates hold LATG (or LAT) as well as VTS (Laboratory Animal); the two credentials are complementary.