Current through Vol. 41, No. 13, March 15, 2024
(a) The thresholds
listed in this section shall be considered the listed threshold for permitted
substances or, if specified as such, naturally occurring substances in Quarter
Horses, Paints, and Appaloosas.
(b) Non-steroidal anti-inflammatories shall
be considered prohibited substances except for the chemicals listed below and
their corresponding analogs and metabolites in concentrations not exceeding the
listed threshold:
(1) Diclofenac: 5 ng/ml in
biological samples consisting of plasma or serum;
(2) Firocoxib: 20 ng/ml in biological samples
consisting of plasma or serum;
(3)
Flunixin: 20 ng/ml in biological samples consisting of plasma or serum;
(4) Ketoprofen: 2 ng/ml in
biological samples consisting of plasma or serum;
or
(5)
Phenylbutazone: 2 ug/ml in biological samples consisting of plasma or serum.
(c) Corticosteroids
shall be considered prohibited substances except for the chemicals listed below
and their corresponding analogs and metabolites in concentrations not exceeding
the listed threshold:
(1) Betamethasone: 10
pg/ml in biological samples consisting of plasma or serum;
(2) Dexamethasone: 5 pg/ml in biological
samples consisting of plasma or serum;
(3) Isoflupredone: 100 pg/ml in biological
samples consisting of plasma or serum;
(4) Methylprednisolone: 100 pg/ml in
biological samples consisting of plasma or serum;
(5) Prednisolone: 1ng/ml in biological
samples consisting of plasma or serum; or
(6) Triamcinolone Acetonide: 100 pg/ml in
biological samples consisting of plasma or serum.
(d) Other substances shall be considered
prohibited substances except for the chemicals listed below and their
corresponding analogs and metabolites in concentrations not exceeding the
listed threshold:
(1) Acepromazine: 10 ng/ml
in biological samples consisting of urine;
(2) Butorphanol: 300 ng/ml of total
Butorphanol in biological samples consisting of urine or 2 ng/ml of free
butorphanol in biological samples consisting of plasma or serum;
(3) Cetirizine: 6 ng/ml in biological samples
consisting of plasma or serum;
(4)
Cimetidine: 400 ng/ml in biological samples consisting of plasma or serum;
(5) Dantrolene: 100 pg/ml of
5-hydroxydantrolene in biological samples consisting of plasma or serum;
(6) Detomidine: 1 ng/ml in
biological samples consisting of plasma or serum;
(7) Dimethyl Sulfoxide (DMSO): 10 ug/ml in
biological samples consisting of plasma or serum;
(8) Furosemide: 100 ng/ml in biological
samples consisting of plasma or serum;
(9) Glycopyrrolate: 3 pg/ml in biological
samples consisting of plasma or serum;
(10) Guaifenesin: 12 ng/ml in biological
samples consisting of plasma or serum;
(11) Lidocaine: 20 pg/ml of total
30H-lidocaine in biological samples consisting of plasma or serum;
(12) Mepivacaine: 10 ng/ml in biological
samples consisting of urine or at the level of detection in biological samples
consisting of plasma or serum;
(13) Methocarbamol: 1 ng/ml in biological
samples consisting of plasma or serum;
(14) Omeprazole: omeprazole sulfide- 10 ng/ml
in biological samples consisting of plasma or serum;
(15) Procaine Penicillin: 25 ng/ml in
biological samples consisting of plasma or serum;
(16) Ranitidine: 40 ng/ml in biological
samples consisting of plasma or serum; or
(17) Xylazine: 200 pg/ml in biological
samples consisting of plasma or serum.
(e) Androgenic-Anabolic Steroids (AAS) shall
be considered prohibited substances except for the chemicals listed below and
their corresponding analogs and metabolites in concentrations not exceeding the
listed threshold:
(1) The naturally occurring
substance, boldenone, shall be permitted in concentrations not exceeding:
(A) 25 pg/ml in biological samples consisting
of plasma or serum for all horses, regardless of sex;
(B) 1 ng/ml in biological samples consisting
of urine for fillies, mares, or geldings; or
(C) 15 ng/ml in biological samples consisting
of urine for male horses other than geldings.
(2) The naturally occurring substance,
nandrolone, shall be permitted in concentrations not exceeding:
(A) 25 pg/ml in biological samples consisting
of plasma or serum for fillies, mares, and geldings;
(B) 1 ng/ml in biological samples consisting
of urine for fillies, mares, or geldings; or
(C) 45 ng/ml in biological samples consisting
of urine for male horses other than geldings.
(3) The naturally occurring substance,
testosterone, shall be permitted in concentrations not exceeding:
(A) 100 pg/ml in biological samples
consisting of plasma or serum for fillies, mares, and geldings;
(B) 55 ng/ml in biological samples consisting
of urine for fillies, mares (unless in foal); or
(C) 20 ng/ml in biological samples consisting
of urine for geldings.
(D) The
concentration of testosterone is not regulated or restricted in fillies or
mares that are confirmed pregnant on the day of racing or in male horses other
than geldings.
(f) The use of non-steroidal
anti-inflammatories and corticosteroids are subject to the additional
conditions:
(1) The presence of more than two
permitted non-steroidal anti-inflammatories in a biological sample consisting
of plasma or serum is prohibited; or
(2) The presence of more than two
corticosteroids in a biological sample consisting of plasma or serum is
prohibited.