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.
The longer the prednisone was taken and the higher the dose, the longer it will take to taper down and stop it. The body itself produces a substance that is equivalent to about 5 mg of prednisone. A short course of 10 mg of prednisone a day may not cause side effects. However, either a dosage of 10 to 20 mg a day for a month or moreâor a dosage of more than 20 mg a day for any length of timeâcould cause some adverse effects. As the prednisone dosage is tapered down below 10 mg a day and eventually discontinued, the temporary side effects will lessen and reverse.