Proposed New Rule # 5.331
Statement of Authority, Basis And Purpose

The Statutory Authority for the adoption of this new Rule # 5.331 is Section 12-60-101, Section 12-60-201, Section 12-60-202, Section 12-60-204, Section 12-60-501, Section 12-60-503, Section 12-60-507, Section 12-60-507.5, Section 12-60-508, Section 12-60-801, Section 12-60-802, and Section 12-60-803, C.R.S.

The Basis and Purpose for permanent adoption of this new rule in the Colorado Racing Commission Rules is to better define Colorado’s animal drug-testing and violation regime with respect to androgenic-anabolic steroids (AAS).   Categorically, anabolic steroids are not allowed in racing animals in Colorado.  This rule delineates enforcement thresholds for some of the naturally-occurring AAS, and conforms to the rule being promulgated by the Association of Racing Commissioners International (A.R.C.I.).  

PROPOSED NEW RULE:

5.331 -  ANDROGENIC-Anabolic Steroids (aas) 

(1)  NO AAS SHALL BE PERMITTED IN TEST SAMPLES COLLECTED FROM   RACING HORSES, EXCEPT FOR RESIDUES OF THE MAJOR METABOLITE OF STANOZOLOL, NANDROLONE, AND THE NATURALLY OCCURRING SUBSTANCES, BOLDENONE AND TESTOSTERONE, AT CONCENTRATIONS LESS THAN THE INDICATED THRESHOLDS. 

(2)  cONCENTRATIONS OF THESE AAS SHALL NOT EXCEED THE FOLLOWING URINE THRESHOLD CONCENTRATIONS FOR TOTAL drug (I.E., FREE DRUG OR METABOLITE AND DRUG OR METABOLITE LIBERATED FROM ITS CONJUGATES):

(a)  16β-hydroxystanozolol (metabolite of stanozolol (Winstrol®)) – 1 ng/ml in urine FOR ALL HORSES REGARDLESS OF SEX;

(B)	Boldenone (Equipoise® IS THE UNDECYLENATE ESTER OF BOLDENONE) In male horses other than geldings --- 15 ng/ml in urine.  nO BOLDENONE SHALL BE PERMITTED IN GELDINGS OR FEMALE HORSES.

(c)	Nandrolone (DURABOLIN® IS THE PHENYLPROPIONATE ESTER AND dECA-DURABOLIN® IS THE DECANOATE ESTER) – 
1.	IN GELDINGS --- 1 ng/ml in urine
2.	IN FILLIES AND MARES --- I NG/ML IN URINE
3.	In male horses other than geldings --- 45 ng/ml in urine

       (d)  Testosterone 
1.	In geldings –-- 20 ng/ml in urine
2.	In fillies and mares –-- 55 ng/ml IN URINE
3.	in male horses other than geldings minimum thresholds will not apply

(3) aLL OTHER aas ARE PROHIBITED IN RACING HORSES.

(4) The presence of more than one of the four AAS IDENTIFIED IN (2) above AT CONCENTRATIONS GREATER THAN THE INDIVIDUAL THRESHOLDS INDICATED ABOVE SHALL NOT BE PERMITTED.

(5)  Post-race urine samples collected from intact males must be identified to the laboratory. 

(6)  Any horse to which an anabolic steroid  has been administered in order to assist in the recovery from illness or injury may be placed on the veterinarian’s list in order to monitor the concentration of the drug OR METABOLITE in urine.  AFTER the concentration HAS FALLEN below the designated threshold FOR THE ADMINISTERED AAS, the horse is eligible to be removed from the list.  ANY LABORATORY TESTING TO DETERMINE THE CONCENTRATION OF AN ADMINISTERED AAS SHALL BE DONE AT THE TRAINER’S AND/OR THE OWNER’S SOLE EXPENSE.