Services
Hair Drug Testing for Employers
A different matrix than urine or oral fluid—useful when your program needs a longer historical view, not a default for every workplace screen.
Hair testing answers a different question
Hair drug testing is not a faster version of urine testing. It is a different matrix used by employers that want a longer historical view rather than a same-day snapshot. That makes it useful in some hiring and specialty monitoring contexts, but a poor fit for others.
Compare long-window options with nail drug testing and day-to-day programs with oral fluid drug testing when counsel is choosing the right matrix.
When employers typically use hair testing
Hair testing is most often considered for:
Selected pre-employment programs
Specialty hiring tiers
Policy-authorized escalations
Monitoring or high-sensitivity roles where counsel has approved the matrix
When hair testing is usually the wrong fit
Hair is usually the wrong fit when the employer needs:
Same-shift incident response
Standard DOT collections
Quick random testing across a large workforce
A direct measure of current impairment
DOT drug testing follows federally mandated specimen rules—hair is not a substitute for DOT-required drug tests.
Why onsite hair collection can still be useful
Even though hair testing is not the default workplace matrix, onsite collection still has benefits. It keeps the event private, gives HR more control over scheduling, and allows hiring teams to manage multiple candidates in one place instead of sending everyone out separately.
What employers should confirm first
Before using hair testing, confirm:
The policy authorizes it
State law permits it
The TPA and lab support the panel
An alternate specimen path exists for insufficient hair
The employer is not trying to use hair for a DOT-required event
Candidate expectations matter
Candidates should know in advance that hair testing is the ordered matrix. Do not surprise people at the appointment.
Related reading
Frequently asked questions
Does hair testing show current impairment?
No.
Can we use hair testing for DOT randoms?
No, not as a standard DOT substitute. DOT-covered employees must follow DOT drug testing specimen and procedure rules.
What if the donor does not have enough hair?
The employer's policy should define the alternate path. Share those rules during intake so collectors follow the contingency your TPA or counsel specifies.
Request a quote for this program
Share DOT or non-DOT context, sites, headcount, and timelines. We confirm logistics, specimen type, and documentation expectations with your DER or TPA before collection day.