1. (a) The following initial cutoff levels shall be used when screening hair specimens to determine whether they are negative for these drugs or their metabolites:

   1. (1) marijuana: 10pg/10 mg of hair
   2. (2) cocaine: 5 ng/10 mg of hair

   3. (3) opiates and metabolites: 5 ng/10 mg of hair; opiates and metabolites include the following:

      1. (A) codeine;
      2. (B) heroin;
      3. (C) morphine;
   4. (4) phencyclidine: 3 ng/10 mg of hair

   5. (5) amphetamines: 5 ng/10 mg of hair; amphetamines include the following:

      1. (A) amphetamines;
      2. (B) methamphetamines.
2. (b) These test levels are subject to change by the Department as advances in technology or other considerations warrant identification of these substances at other concentrations.
3. (c) Drugs other than those listed shall be tested by scientifically established methods at scientifically established detection levels.

Added at 17 Ok Reg 381, eff 11-1-99 (emergency)

Added at 17 Ok Reg 2045, eff 6-12-00

Amended at 18 Ok Reg 3592, eff 8-22-01 (emergency)

Amended at 19 Ok Reg 1050, eff 5-13-02