Australian Racing Board
The Executive Council of the International Federation of Horseracing Authorities (IFHA) has approved the addition of a threshold level for free testosterone in blood plasma from geldings. This threshold level has been derived from international collaborative studies that included input from Australia. The threshold of 100 picograms per milliliter of free testosterone in gelding plasma has been recommended for inclusion in AR.178C(1)(g) by the ARB’s Veterinary and Analysts Committee (VAC). As conjugated testosterone is not an entity in plasma, AR.178C(1)(g) has been redrafted accordingly.
Amendment to Rule 178C(1)(g)
Please amend AR.178C(1)(g) to read as follows:
(1) The following prohibited substances when present at or below the concentrations respectively set out are excepted from the provisions of AR.178B and AR.178H:-
(i) in geldings: free testosterone and testosterone liberated from its conjugates at a mass concentration of 20 micrograms per litre in urine;
(ii) in fillies and mares: free testosterone and testosterone liberated from its conjugates at a mass concentration of 55 micrograms per litre in urine;
(iii) in fillies and mares that have been notified as pregnant pursuant to the
(iv) requirements of AR.64E(2): free testosterone and testosterone liberated from its conjugates at any concentration in urine;
(iv) in geldings: free testosterone at a mass concentration of 100 picograms per millilitre in plasma.
Date of effect: 1st January, 2015