Services
PEth Alcohol Testing for Employers
A specialty blood marker for monitoring contexts—not a replacement for breath alcohol when regulations or policy require current-intoxication testing.
PEth is not a substitute for breath alcohol testing
PEth testing is a blood-based alcohol marker used in specialty monitoring and occupational-health contexts. It is not the same as a current-intoxication breath alcohol test, and employers should not treat it as a replacement when BAT is the required method.
When Part 40 or your policy requires evidential breath testing, use breath alcohol testing instead.
When employers usually use PEth
PEth is most often used for:
Professional monitoring programs
Physician-directed alcohol monitoring
Specialized return-to-work plans
Legal or counsel-directed cases
Certain safety-sensitive occupational health contexts
When PEth is usually the wrong choice
PEth is usually the wrong choice when the employer needs:
Immediate post-accident alcohol testing
Standard DOT alcohol testing
Same-day suspicion-based alcohol screening
An instant result in the field
What employers should confirm first
Before scheduling a PEth draw, confirm:
The exact lab order
Whether mobile phlebotomy is allowed
Fasting or timing rules
The result-routing process
Whether the event is part of a monitoring agreement or other formal program
Why onsite collection can still help
When PEth is the correct test, onsite phlebotomy can reduce friction and keep the event private. That is often useful for employers handling sensitive monitoring situations or trying to avoid public clinic visits.
General employer blood collection discipline also appears under blood testing when your program mixes specialized alcohol markers with other lab orders.
What employers should understand
Employers should keep these boundaries clear:
PEth is a specialty service
PEth is blood-based
Results are not immediate
PEth is not standard DOT alcohol testing
Interpretation belongs to the medical or monitoring program
DOT drug testing and DOT alcohol rules follow separate federal requirements—PEth does not substitute for standard regulated alcohol collections.
Related reading
Frequently asked questions
Is PEth the same as a breathalyzer?
No.
Can PEth be collected onsite?
Sometimes, when the order and site support mobile phlebotomy. Share the requisition and site details during intake.
Is PEth used for DOT post-accident alcohol tests?
No, not as the standard DOT method. Route regulated alcohol tests through breath alcohol testing and your DER.
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.