UPA Test Prop 100

Due to Testosterone Propionate possessing a brief active-life of 2-3 days, many athletes involved in tested competitions liked the stuff…a lot. Testing is usually based upon testosterone /Epitestosterone levels. Though most individuals have a much lower ratio, athletes can have natural ratios of up to 6:1. This is considered a negative test for steroids. usually. By injecting Propionate up to 36 hours before competition, plasma Testosterone levels remained elevated while urine concentrations usually fell within the 6:1 levels. Of course IOC testing protocols would detect any plant origin AAS today. But several groups still simply test for the ratio only.