Section 260-70-630. Threshold levels.

(1) Permitted medications.

(a) The following quantitative medications and/or metabolites are permissible in test samples up to the stated concentrations in urine:

Acepromazine - 25 ng/ml

Albuterol - 1 ng/ml

Bupivicaine - 5 ng/ml

Detomidine - 1 ng/ml

Mepivacaine - 10 ng/ml

Omeprozole - 1 ng/ml

Promazine - 25 ng/ml

Pyrilamine - 25 ng/ml

(b) The following quantitative medications and/or metabolites are permissible in test samples up to the stated concentrations in serum or plasma:

Betamethasone - 10 pg/ml

Butorphanol - 2 ng/ml

Clenbuterol - 25 pg/ml

Dantrolene - 100 pg/ml

Dexamethasone - 1 ng/ml

Diclofenac - 5 ng/ml

DMSO - 10 mc/ml

Firocoxib - 40 ng/ml

Glycopryrrolate - 3 pg/ml

Isoflupredone - 100 pg/ml

Lidocaine - 20 pg/ml

Methocarbamol - 1 ng/ml

Methylprednisolone - 1.3 ng/ml

Prednisolone - 1 ng/ml

*Procaine penicillin - 25 ng/ml

Triamcinolone - 100 pg/ml

Xylazine - 0.2 ng/ml

*	Administration of procaine penicillin to those horses entered must be reported to the commission and may require surveillance up to six hours prior to post time.

(c) The official urine or blood test sample may not contain more than one of the above substances, including their metabolites or analogs, and may not exceed the concentrations established in this rule.

(2) Environmental substances.

(a) Certain substances can be considered "environmental" in that they are endogenous to the horse or that they can arise from plants traditionally grazed or harvested as equine feed or are present in equine feed because of contamination or exposure during the cultivation, processing, treatment, storage, or transportation phases. Certain drugs are recognized as substances of human use and could therefore be found in a horse. The following substances are permissible in test samples up to the stated concentrations:

Arsenic - 0.3 mc/ml urine

Caffeine - 100 ng/ml serum or plasma

Benzoylecgonine - 50 ng/ml urine

Estranediol - 0.045 mc/ml free + conjugated (5a-oestrane-3β,17a-diol), in male horses, other than geldings

Hydrocortisone - 1 mc/ml urine

Methoxytyramine - 4 mc/ml, free + conjugated urine

Morphine Glucuronides - 50 ng/ml urine

Salicylate saliclic acid - 750 mc/ml serum or plasma

Theobromine - 2 mc/ml urine

(b) If a preponderance of evidence presented shows that a positive test is the result of environmental substance or inadvertent exposure due to human drug use, that evidence should be considered as a mitigating factor in any disciplinary action taken against the trainer.

(3) Androgenic-anabolic steroids.

(a) The following androgenic-anabolic steroids are permissible in test samples up to the stated concentrations:

Boldenone (Equipoise) - 15 ng/ml urine in intact males. No level is permitted in geldings, fillies or mares.

Nandrolone (Durabolin) - 1 ng/ml urine in geldings, fillies, and mares, and for nandrolone metabolite (5a-oestrane-3β,17a-diol) - 45 ng/ml urine in intact males.

Testosterone - 20 ng/ml urine in geldings. 55 ng/ml urine in fillies and mares. Samples from intact males will not be tested for the presence of testosterone.

(b) All other androgenic-anabolic steroids are prohibited in race horses.

[Statutory Authority: RCW 67.16.020. WSR 15-13-079, § 260-70-630, filed 6/12/15, effective 7/13/15; WSR 14-13-074, § 260-70-630, filed 6/13/14, effective 7/14/14; WSR 13-07-045, § 260-70-630, filed 3/15/13, effective 4/15/13; WSR 12-07-010, § 260-70-630, filed 3/9/12, effective 4/9/12. Statutory Authority: RCW 67.16.020 and 67.16.040. WSR 08-17-051, § 260-70-630, filed 8/14/08, effective 9/14/08; WSR 08-05-091, § 260-70-630, filed 2/15/08, effective 6/1/08; WSR 06-09-009, § 260-70-630, filed 4/10/06, effective 5/11/06; WSR 05-07-067, § 260-70-630, filed 3/11/05, effective 4/11/05. Statutory Authority: RCW 67.16.020. WSR 04-05-095, § 260-70-630, filed 2/18/04, effective 3/20/04; WSR 03-11-019, § 260-70-630, filed 5/12/03, effective 6/12/03. Statutory Authority: RCW 67.16.040. WSR 96-10-001, § 260-70-630, filed 4/17/96, effective 5/18/96.]

RCW 67.16.020. WSR 15-13-079, § 260-70-630, filed 6/12/15, effective 7/13/15; WSR 14-13-074, § 260-70-630, filed 6/13/14, effective 7/14/14; WSR 13-07-045, § 260-70-630, filed 3/15/13, effective 4/15/13; WSR 12-07-010, § 260-70-630, filed 3/9/12, effective 4/9/12. Statutory Authority: RCW 67.16.020 and 67.16.040. WSR 08-17-051, § 260-70-630, filed 8/14/08, effective 9/14/08; WSR 08-05-091, § 260-70-630, filed 2/15/08, effective 6/1/08; WSR 06-09-009, § 260-70-630, filed 4/10/06, effective 5/11/06; WSR 05-07-067, § 260-70-630, filed 3/11/05, effective 4/11/05. Statutory Authority: RCW 67.16.020. WSR 04-05-095, § 260-70-630, filed 2/18/04, effective 3/20/04; WSR 03-11-019, § 260-70-630, filed 5/12/03, effective 6/12/03. Statutory Authority: RCW 67.16.040. WSR 96-10-001, § 260-70-630, filed 4/17/96, effective 5/18/96.