DOT Testing Levels - Effective October 1, 2010

Submitted on Oct 01, 2010

§40.87 What are the cutoff concentrations for drug tests?

(a) As a laboratory, you must use the cutoff concentrations displayed in the following

table for initial and confirmatory drug tests. All cutoff concentrations are expressed in

nanograms per milliliter (ng/mL). The table follows:

Initial Test Analyte

Initial Test Cutoff

Concentration

Confirmatory Test

Analyte

Confirmatory Test

Cutoff Concentration

Marijuana metabolites

50 ng/mL

THCA1

15 ng/mL

Cocaine metabolites

150 ng/mL

Benzoylecgonine

100 ng/mL

Opiate metabolites

 

 

 

  Codeine/Morphine2

2000 ng/mL

Codeine

2000 ng/mL

 

 

Morphine

2000 ng/mL

6-Acetylmorphine

10 ng/mL

6-Acetylmorphine

10 ng/mL

Phencyclidine

25 ng/mL

Phencyclidine

25 ng/mL

Amphetamines3

 

 

 

  AMP/MAMP4

500 ng/mL

Amphetamine

250 ng/mL

 

 

Methamphetamine5

250 ng/mL

MDMA6

500 ng/mL

MDMA

250 ng/mL

 

 

MDA7

250 ng/mL

 

 

MDEA8

250 ng/mL

1Delta-9-tetrahydrocannabinol-9-carboxylic acid (THCA)

2Morphine is the target analyte for codeine/morphine testing

3Either a single initial test kit or multiple initial test kits may be used provided the single test

kit detects each target analyte independently at the specified cutoff

4Methamphetamine is the target analyte for amphetamine/methamphetamine testing

5To be reported positive for methamphetamine, a specimen must also contain amphetamine

at a concentration equal to or greater than 100 ng/mL

6Methylenedioxymethamphetamine (MDMA)

7Methylenedioxyamphetamine (MDA)

8Methylenedioxyethylamphetamine (MDEA)

(e) On a 6-AM confirmed positive result:

(1) When a 6-AM confirmed positive result is reported and morphine for that specimen is

not reported at or above the 2000 per ng/mL confirmed positive cutoff, you must confer with the

MRO to determine if there was confirmed morphine below 2000 ng/mL.

(2) If morphine was not confirmed below 2000 ng/mL, you and the MRO must determine

whether further testing is needed to quantify the amount of morphine concentration present.

(3) If you find no detectable morphine at LOD upon further testing, you must report that

fact to ODAPC immediately.