Over the past week I have lost 3 fish to tuberculosis and since i dont see any of the other symptoms on any other fish I need to know if there is a way to test your water for the disease.
Unfortunately there isn't. Have you checked your water paramaters? (ammonia, nitrite, nitrate, and pH)? One thing you may want to condider is treating your entire tank with minocycline (maracyn 2), since it is one of the few antibiotics that works against TB.