Section 603.210  Androgenic-Anabolic Steroids (AAS)

a)         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.

b)         Concentrations of these AAS shall not exceed the following threshold concentrations for total (i.e., free drug or metabolite and drug or metabolite liberated from its conjugates) drug:

1)         In urine:

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) –

i)          In geldings − 1 ng/ml in urine.

ii)         In fillies and mares – 1 ng/ml in urine.

iii)         In male horses other than geldings – 45 ng/ml of metabolite, 5α-oestrane-3β,17α-diol in urine.

D)        Testosterone −

i)          In geldings – 20 ng/ml in urine.

ii)         In fillies and mares – 55 ng/ml in urine.

iii)         Male horses other than geldings will not be tested; or

2)         In plasma:

A)        Stanozolol ‒ screening limit no greater than 100 pg/ml in serum or plasma with a confirmatory threshold no greater than 25 pg/ml for all horses regardless of sex.

B)        Boldenone ‒ screening limit no greater than 100 pg/ml in serum or plasma with a confirmatory threshold no greater than 25 pg/ml for all horses regardless of sex.

C)        Nandrolone ‒ screening limit no greater than 100 pg/ml in serum or plasma with a confirmatory threshold no greater than 25 pg/ml for geldings and fillies and mares. Male horses other than geldings will not be tested.

D)        Testosterone −

i)          In geldings ‒ screening limit no greater than 100 pg/ml in serum or plasma with a confirmatory threshold no greater than 25 pg/ml.

ii)         In  fillies and mares ‒  screening limit no greater than 100 pg/ml in serum or plasma with a confirmatory threshold no greater than 25 pg/ml.

iii)         In male horses other than geldings ‒ confirmatory threshold no greater than 2,000 pg/ml in serum or plasma.

c)         All other AAS are prohibited in racing horses.

d)         Post-race urine and blood samples collected from intact males must be identified to the laboratory.

e)         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.

(Source:  Amended at 35 Ill. Reg. 8485, effective May 23, 2011)