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  /  NEWS   /  Uniform Medication Rules Now in Effect

Uniform Medication Rules Now in Effect

Uniform TestingEffective January 1, 2014, The Pennsylvania Horse Racing Commission in accordance with its existing therapeutic regulations (58 Pa. Code 163.304) incorporates and adopts the most current list of therapeutic substances and threshold levels issued by the Racing Medication & Testing Consortium (RMTC) and any subsequent modification approved by The Association of Racing Commissioners International (ARCI) regarding therapeutic medications.

The following chart details these new accepted medication standards and withdrawal times:

SubstanceRestricted Administration TimeThresholdRoute of AdministrationExperimental Administration Dosage
Acepromazine48 HoursHEPS - 10 ng/mL
of urine
Intravenous0.05 mg/kg
Betamethasone7 Days10 pg/mL in plasma or serumIntra-articular9 mg total in one articular
Butorphanol48 HoursFree butorphanol - 2 ng/mL of plasma or
Total butorphanol - 300 ng/mL of urine
Intravenous0.1 mg/kg
Clenbuterol14 Days140 pg/mL of urine or LOD in plasmaOral0.8 mcg/kg
Dantrolene48 Hours5-OH dantrolene - 0.1 ng/mL of plasma or serumOral500 mg total dose
Detomidine72 Hours1 ng/mL of carboxydetomidine in urine;
LOD for detomidine in plasma
(Domosedan gel)
40 mcg/kg
Dexamethasone72 Hours5 pg/mL of plasma or serumOral, Intravenous,
0.05 mg/kg
Diclofenac48 Hours5 ng/mL of plasma or serumTopical5” ribbon of Surpass
every 12 hours to one site
DMSO48 Hours10 mcg/mL of plasma or serumOral or IV
Firocoxib14 Days20 ng/mL of plasma or serumOral0.1 mg/kg for 4 days
Flunixin24 Hours20 ng/mL of plasma or serumIntravenous1.1 mg/kg
Furosemide4 Hours100 ng/mL in blood and urine specific gravity < 1.010IntravenousUp to 500 mg total dose
Glycopyrrolate48 Hours3 pg/mL of plasma or serumIntravenous1 mg total dose
Ketoprofen24 Hours10 ng/mL of plasma or serumIntravenous2.2 mg/kg
72 Hours20 pg/mL of total 3OH-lidocaine in plasmaSubcutaneous -
distal limb
200 mg of lidocaine
hydrochloride salt
Mepivacaine72 Hours3OH-mepivacaine - 10 ng/mL in urine or mepivacaine at
LOD in plasma
Subcutaneous -
distal limb
0.07 mg/kg
Methocarbamol48 Hours1 ng/mL of plasma or serumIV or Oral15 mg/kg IV,
5 g oral
Methylprednisone7 Days100 pg/mL in plasma or serumIntra-articular100 mg total in one article
Omeprazole24 Hoursomeprazole sulfide - 1 ng/mL in urineOral3.9 mg/kg
Phenylbutazone24 Hours2 mcg/mL of plasma or serumIntravenous4 mg/kg
Prednisolone48 Hours1 ng/mL of plasma or serumOral1 mg/kg
Procaine PenicillinTime of Entry25 ng/mL of plasmaIntra-muscular
7 Days100 pg/mL of plasma or serumIntra-articular9 mg total in one articular
Xylazine (interim)48 Hours0.01 ng/mL of plasmaIntravenous

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