Help save our bats: Due to the spread of White-Nose Syndrome, a deadly disease affecting hibernating bats, visitors are asked to clean their gear before entering Carlsbad Caverns National Park.
Best Answer: Prednisone has a half-life of roughly 1 to 1.5 days. This means that after 4-6 days, levels of the drug drop below natural levels of cortisol, so it no longer has an effect. There's no way to predict the chances that your blood test results are caused by prednisone-you have to wait and see what happens.
I was only on prednisone for two very short periods of time (5 days at 10 mg, and then later 6 days at 20 mg) so I was never at a high dose for a long period of time. Having said that, my experiences with prednisone were totally positive.