The range of tests available are:

1). anti-tTG (anti tissue transglutiminase)

2). anti-endomysial (EMA)

3). IgA antigliadin

4). IgG antigliadin

5). and Total IgA concentration or may be called Total serum IgA

6). anti reticulin IgA

The total IgA serum needs to be done to eliminate the chance of you having IgA deficiency which about 5% of the population have. If IgA deficiency exits this would give a false negative result, even though you may have CD.