I got a TB skin test approx. 13hrs ago and at the injection site there is a red circle pretty much the exact size of a quarter...theres no real hard callis but when i lightly run my finger over the area I can tell that its not 100% flat, its probably 5% raised, if that. (im not good at percentages or numbers so dont hold me to that) Basically I AM FREAKING OUT!!! And google isnt helping me calm down. I guess why I need a nurse to read and respond to this is I need to know what is a positive TB test and what isn't.