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

   1. (1) marijuana metabolites: 50 ng/ml
   2. (2) cocaine metabolites: 300 ng/ml

   3. (3) opiates and metabolites: 2000 ng/ml; opiates and metabolites include the following:

      1. (A) codeine;
      2. (B) heroin;
      3. (C) morphine;

   4. (4) semi-synthetic and synthetic narcotics: 300 ng/ml

      1. (A) hydrocodone;
      2. (B) hydromorphone;
      3. (C) meperidine (immunoassay unavailable, initial test level of 1000 ng/ml shall be used for meperidine)
      4. (D) methadone;
      5. (E) oxycodone;
      6. (F) propoxyphene;
   5. (5) phencyclidine: 25 ng/ml

   6. (6) amphetamines: 1,000 ng/ml; amphetamines include the following:

      1. (A) amphetamines;
      2. (B) methamphetamines;
      3. (C) methylenedioxyamphetamine (immunoassay unavailable);
      4. (D) methylenedioxymethamphetamine (immunoassay unavailable);
      5. (E) phentermine;

   7. (7) barbiturates: 300 ng/ml; barbiturates include the following:

      1. (A) amobarbital;
      2. (B) butalbital;
      3. (C) pentobarbital;
      4. (D) secobarbital;

   8. (8) benzodiazepines: 300 ng/ml; benzodiazepines include the following:

      1. (A) diazepam;
      2. (B) chlordiazepoxide;
      3. (C) alprazolam;
      4. (D) clorazepate; and
   9. (9) methaqualone: 300 ng/ml.
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 11 Ok Reg 4339, eff 7-14-94 (emergency)

Added at 12 Ok Reg 517, eff 12-12-94 (emergency)

Added at 12 Ok Reg 3069, eff 7-27-95

Amended at 16 Ok Reg 2514, eff 6-25-99

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

Amended 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