Oral fluid drug testing panels and cutoffs

Oral-Eze Oral Fluid Collection DeviceOur employer oral fluid drug testing panels detect commonly abused drugs and yield reliable results that are defensible in court, meaning you can screen with confidence.


A two-tiered testing process ensures that positive oral fluid drug test results are re-checked and confirmed. The initial oral fluid specimen is screened using enzyme immunoassay (EIA), a proven reliable methodology for routine drug testing.

Any samples that are presumptively positive in the initial tests are confirmed, utilizing another portion of the oral fluid sample, using either gas chromatography/mass spectrometry (GC/MS) or gas chromatography/mass spectrometry/mass spectrometry (GC/MS/MS) technology. 

Quest Diagnostics Employer Solutions drug testing locations hold and maintain Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), SAMHSA and CAP certification as well as any applicable state licensure.   

Employers can test for a wide range of drugs:

Drug class

Screen cutoff

Confirmation cutoff


150 ng/mL

120 ng/mL


15 ng/mL

6 ng/mL

Marijuana (THC)

3 ng/mL

1.5 ng/mL


120 ng/mL

120 ng/mL


30 ng/mL

30 ng/mL*

 Phencyclidine (PCP)

 3 ng/mL

 1.5 ng/mL

*Confirmatory testing is 3 ng/mL for 6-AM.

Download our Oral-Eze collection instructions.

Download our Guide to Establishing a Workplace Drug Testing Program.

Download our Oral-Eze oral fluid drug testing brochure and FAQs.

Download our white paper about oral fluid screening for marijuana.

Watch our oral fluid drug testing video.

To get started with Quest today, call 1.800.877.7484 or contact us online.