The ADA neither prohibits nor authorizes drug testing, and no federal law we found requires a private veterinary practice to test; the Drug-Free Workplace Act reaches only federal contractors and grantees.
State law sets the limits: California, New York and New Jersey each restrict when an off-duty use or a metabolite result can cost someone a job, and other states' rules were not checked for this page.
Here is the federal baseline, the state rules and how to write a policy.
Rules vary by state and change
This guide explains federal rules and the state rules it names, as of the date above.
Employment law and veterinary practice rules differ by state and are revised often, so confirm current requirements with your state veterinary board, labor agency or employment counsel before you act on them.
It is general information, not legal advice.
Why diversion risk puts drug testing on the table in veterinary hospitals
An animal hospital stocks controlled substances — the anesthetics and pain-control drugs veterinary medicine runs on, ketamine and the opioids among them — and gives some of the staff it hires access to that stock.
That is the business reason the drug-testing question comes up in veterinary hiring at all: the roles with drug access are the roles where diversion is the risk you are managing.
One state board has said it plainly.
In 2016, the Texas Board of Veterinary Medical Examiners wrote that there is a large and growing problem of diversion of controlled substances in society, and that it is becoming a larger problem in the veterinary community.
That is a state board's observation, not a measurement.
We found no sourced figure for how often veterinary staff divert drugs or how many hospitals test, so anchor the decision to your own hospital's risk — which roles open the drug log, who counts inventory, what your own logs show — and give any statistic a vendor quotes you the same scrutiny.
Two federal rules give the risk teeth.
Under 21 CFR 1301.76(a), a DEA-registered practitioner may not employ, in a role with access to controlled substances, anyone convicted of a felony relating to controlled substances, or anyone whose DEA application was denied, whose registration was revoked, or who surrendered a registration for cause.
And if stock does go missing, 21 CFR 1301.76(b) requires the registrant to notify the DEA Field Division Office in writing within one business day of discovering a theft or significant loss, and to file DEA Form 106 within 45 days.
A drug test is a third layer, distinct from conviction screening and from credential verification.
Conviction screening is its own decision with its own legal sequence — our guide to background checks walks it — and the controlled substance rules your practice answers to, federal and state, decide who may handle the stock in the first place.
No federal requirement for private employers
Start with what federal law does not do.
We found no federal statute that requires a private veterinary practice to drug test its staff, and the reading is supported from two directions.
The ADA states in so many words that nothing in it encourages, prohibits or authorizes drug testing of applicants or employees.
The Drug-Free Workplace Act of 1988, the statute that sounds like it might require exactly this, requires a drug-free workplace policy only from organizations holding a federal contract of $100,000 or more or a federal grant of any size — a practice with neither is outside it.
Even for those organizations the Act requires a policy, not tests: neither the Drug-Free Workplace Act nor its rules authorize drug testing of employees, as New York's labor department summarizes the federal guidance.
The ADA does place one marker that matters for design: a test to determine the illegal use of drugs is not considered a medical examination.
So the ADA neither answers nor forecloses the question of whether to test.
It reaches you as a policy decision — and the parts of the ADA that do bite, current use versus recovery, get their own section below.
Federal silence is not permission to skip the analysis.
It hands the cannabis question to the states, and the three states this page verifies have written their rules in different directions.
State drug-testing statutes: the rules that decide whether you can test
With no federal mandate for the test itself, state statutes carry the cannabis rules, and the three states this page verifies show how little they have in common.
New York restricts testing itself: employers may not test for cannabis unless the testing is permitted under Labor Law § 201-D(4-a) or other applicable law — for example, a law that mandates testing for the position.
California is more permissive at the front door: employers may still require all job applicants to take a drug screening test.
New Jersey sits between them and names the moments when testing is allowed — reasonable suspicion of on-duty use, observable signs of impairment, a random testing program, or a work-related accident under investigation — each covered below.
Coverage thresholds differ too, and they decide whether a state's protections reach you at all.
New York's cannabis protections apply to all private employers in the state regardless of size.
California's cannabis-use protections do not apply to employers with four or fewer employees, per the state Civil Rights Department.
Two cautions before you borrow any of this.
First, these are the cannabis statutes; states may also regulate drug testing through other statutes we did not verify for this page — notice requirements, permitted-testing grounds, discipline rules — so have employment counsel or your state labor department confirm what applies where you hire before the policy goes in the handbook.
Second, do not carry one state's rule across a state line: New York's no-testing default and New Jersey's random-testing allowance are each that state's rule.
Off-duty cannabis protections: California AB 2188, New York, New Jersey
California.
Since January 1, 2024, Government Code § 12954 has barred employers from discriminating in hiring, firing or terms of employment based on a person's use of cannabis off the job and away from the workplace.
Two parts change how a drug test can be used.
A test that finds non-psychoactive cannabis metabolites in hair, blood, urine or other bodily fluids cannot be the basis for penalty, while testing methods that do not screen for non-psychoactive metabolites remain allowed; and a scientifically valid test showing psychoactive THC, or other substances screened for under state or federal law, may be the basis for denying a job.
The statute reaches your application form too: employers may not ask applicants about prior cannabis use, with limited exceptions for criminal-history information allowed under other law.
The protection has limits of its own: it does not permit an employee to possess, be impaired by or use cannabis on the job, and it preserves the employer's right to a drug- and alcohol-free workplace.
New York.
Labor Law § 201-d, as amended by the MRTA, bars employers from discriminating against employees based on use of cannabis outside the workplace, outside work hours and without the employer's equipment or property — and the protections apply regardless of employer size.
Three operational points follow from the state labor department's guidance.
A cannabis test cannot serve as the basis for concluding an employee was impaired, because such tests do not currently demonstrate impairment.
Employers may not test for cannabis unless permitted under § 201-D(4-a) or other applicable law, such as a law that mandates testing for the position.
And the smell of cannabis, on its own, is not evidence of articulable symptoms of impairment — a manager who smells it needs to document what they actually observe before anything else happens.
New Jersey.
Under N.J.S.A. § 24:6I-52, an employee may not face adverse action solely because cannabinoid metabolites are present from lawful cannabis use.
But the state Cannabis Regulatory Commission's guidance names the moments when testing is allowed: employers may test on reasonable suspicion of an employee using cannabis while performing work responsibilities, on observable signs of impairment, as part of a random testing program, or after a work-related accident that is being investigated.
A metabolite result alone is insufficient to support an adverse action; combined with documented physical signs or other evidence of impairment during work hours, it may support one.
Note the guidance's own status: it is interim, pending CRC standards for Workplace Impairment Recognition Expert certification, and whether those standards have since been adopted was not checked for this page — confirm the current guidance first.
The ADA: current use versus recovery
Federal disability law draws its own line, and it is not simply "you failed a test."
Under the ADA, an employee or applicant currently engaging in the illegal use of drugs is not a qualified individual with a disability when the employer acts on the basis of that use.
Someone who has successfully completed a supervised drug rehabilitation program and is no longer engaging in the illegal use of drugs can still be a protected individual with a disability.
Recovery status does not stop you from testing.
The ADA expressly allows employers to adopt or administer reasonable policies or procedures, including drug testing, designed to ensure that a person in recovery is no longer engaging in the illegal use of drugs.
Read together with the ADA's neutrality on whether to test, the federal shape is: whether to test is left to you and your state's law, current illegal drug use can ground an employment decision, and a person in recovery is protected in that recovery.
One gap to flag: whether a state-lawful cannabis user counts as "currently engaging in the illegal use of drugs" under the ADA is not answered by the sources read for this page.
Put that question to employment counsel where you hire.
One more rule follows the information rather than the decision: under the ADA's implementing rules, medical information about applicants and employees must be collected and maintained on separate forms and in separate medical files, and treated as a confidential medical record.
Anything an employee tells you about treatment or recovery is squarely that kind of information.
A drug result is one step removed — the ADA also says a test for illegal drug use is not itself a medical examination — so ask employment counsel where the result itself belongs.
Whichever file it lands in, the direction of the rule is the same: separate and confidential, not the personnel file.
Writing the policy: pre-employment, reasonable suspicion, post-incident
Decide the three moments first, then write down who can invoke each one.
Pre-employment.
This is the screen a conditional offer rides on: hiring proceeds only if the result satisfies the policy.
California still lets you require all job applicants to take a drug screening test, and a scientifically valid result showing psychoactive THC may be the basis for denying a job — but the same statute bars asking applicants about prior cannabis use, so the application form and interview script need review too.
That constraint bites even when you borrow federal language.
DEA publishes model screening questions, but the section they sit in is written for non-practitioner registrants such as manufacturers and distributors, so treat the wording as something to borrow, not a requirement that reaches you.
One model question asks whether, in the past three years, the applicant knowingly used narcotics, amphetamines or barbiturates other than as prescribed — and state inquiry limits, California's cannabis-history bar among them, still apply to how you ask anything similar.
Reasonable suspicion.
New Jersey's guidance gives two usable triggers: testing on reasonable suspicion of an employee using cannabis while performing work responsibilities, or on observable signs of impairment.
New York adds the discipline your managers need: the smell of cannabis alone is not evidence of articulable symptoms of impairment, so the documentation has to describe what the person observed — speech, coordination, behavior — not the odor.
Name who can order a test at your practice, what they must document, and what happens between the order and the result.
Post-incident.
New Jersey names this moment precisely too: after a work-related accident that is being investigated.
Define "accident" before you need the word — in a hospital, the candidates are anesthetic events and needle injuries.
A missing count from the drug stock is a different event, so whether it can trigger a test depends on the permitted grounds where you hire — confirm that with counsel.
It does start a second clock: if it turns out to be a theft or significant loss, the DEA notice is due in writing within one business day of discovery, with DEA Form 106 to follow within 45 days.
Where a test is permitted, it is one way to investigate the people side; the reporting deadlines run whether or not you ever identify a person.
Then write it all down.
Put the whole sequence — which roles, which moments, who orders a test, what a result can and cannot be used for, where results are stored — into the handbook policy, and have employment counsel read it against your state's statute before it goes live.
If part of the policy is confirming that a new veterinarian can handle the stock at all, that verification is its own step — our DEA checks guide walks it.
And for where this page sits in the rest of the sequence, the veterinary hiring hub is the map.
Before the policy goes live
- Name the roles the policy covers, and apply it the same way to every candidate in a role
- Pick your moments: pre-employment, reasonable suspicion, post-incident — and define each one before you need it
- Check the off-duty cannabis rules where you hire; California, New York and New Jersey each write them differently
- In California: review the application and interview script for cannabis-history questions, and note that testing methods that do not screen for non-psychoactive metabolites remain allowed
- Decide where results live: separate and confidential, not the personnel file — and ask counsel how a drug result fits alongside ADA medical records
- Write the DEA theft-or-loss steps into the policy: written notice within one business day, DEA Form 106 within 45 days
- Have employment counsel read the final policy against the statute where you hire