What is the difference between an ANA and ELISA test? I tested high positive for one and negative for the other. Please explain in simplest terms. TY!

ANA vs ELISA. Well ANA is a protein produced by our immune system in various situation. ELIZA is method which uses to identify and detect ANA. There is also another method used to detect ANA. In 2nd method the titer is reported too rather then saying it's positive or negative.