Thank you for your query at DoctorSping.com
Yes now you can be absolutely sure.
There is no further concern, and you should not worry at all.
Continue Prednisone, it will reduce your rash. Make sure you know the correct regimen from your doctor.
Patient replied :
I feel alot better, would you think it will change after 6 months or i have to check after that?
No whatever tests you have done is conclusive.
There is no further need of testing.