I agree with Amy..

I forgot to add that when you will be taking a biological you have to get rid of the TB first. Otherwise you can get really really sick.

Before starting you on a biologic they will always check you for latent TB. I have latent TB and I have known since elementary school. Back in the 60s when TB was still a big issue they would test everyone in school yearly. I don't know when or how I was exposed. No one else in my family tested positive. My body has held it in check for 50 years. I doubt it's a scam. Just no one has checked you before