curious Posted September 12, 2023 Share Posted September 12, 2023 1 hour ago, the galah said: Reading about hair testing. It seems it has its limits. It doesn't detect recent use.Normally they say it takes at least 10 days to show in hair. So as well as being more expensive,you can see why they do urine and blood. As to the original topic. The bute positive by the telfer team. The amount of bute given to a horse will decrease by 50% on average every 7.22 hours. Each horse metabolises at a different speed,some may be as fast as 5 hours and some as slow as 9 hours,but the average is 7.22 hours. So by the end of day one,90% has been metabolized and by the end of day 2 only 1% of the original dose remains. So if a horse is given the recommended dose he should not be returning a positive above the threshold level around 2 days, long before the withholding time which is 9.8 days. Then there is also a measurement uncertainty level which labs factor in to cover a horse that metabolizes it slowly. Again,with that measurement uncertainty factored in,even a slow metabolizing horse should be under the threshold level around 2 days after treatment. Also the levels in the horse include all its tissue,not just the bloodstream so in effect the bloodstream level should be slightly lower. So really theres no excuses for a horse to be presented to race with bute above the threshold level if the withholding time had been adhered to. Absolutely. I've been present when a horse was given IV bute 48 hours prior to raceday for ouchy feet after shoeing. Horse won. Swab was clear. Vet was confident and it unlikely had any effect on performance. 1 1 Quote Link to comment Share on other sites More sharing options...
Chief Stipe Posted September 25, 2023 Author Share Posted September 25, 2023 There's obviously someone that leaks information to @Archie Butterfly - I have my suspicions who it is. Quote Link to comment Share on other sites More sharing options...
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