How often does iga deficiency progress to cvid? i was tested at 26 and don't have cvid. is it likely to turn into cvid?

Depends on level: If there is true deficiency, 20 % get symptoms before 16 years of age. Most people developed in their 3rd or 4th decade of life.Male and female equally. Recurrent infections of nose, ear, sinus, lung, abdomen, enlarged lymph nodes in neck and abdomen etc. But first of all one should determine if deficiency exit or not by using more sophisticated tests.