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Originally Posted by docicu3
With the life of a red blood cell being 90 days, EPO has to be given quite some time prior to race day to be of any use. Lasix or furosemide would need to be given inside that 6 hour window to increase pulmonary capacitance. I suppose some minimal effect is gained 7 hours prior but it certainly is not being used at maximal efficacy. However Epogen is being altered is almost irrelevant when you give it literally a month or two prior to race day to stimulate red cell mass, by the time they test for it after a race it's months since the horse has seen the drug
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EPO is not used on a one time basis. A series of doses are given over a period of time.
I wasn't speaking of Lasix when tlking about outside of the 6 hour window.