What is an Ab blood test?

Antibodies. Ab is a common abbreviation for antibody. This is a very broad area, so it is difficult to know the answer without more context-- it could be looking for antibodies to blood groups, to a possible current or prior infection, or possibly to some sort of specific antigen in your own body, an "auto-antibody".

Related Questions

Does anyone know what a gliadin ab blood test is for?

Celiac disease. Testing for antibodies to deamidated gliadin is one of the tests for celiac disease. Read more...
Celiac sprue screen. One of several antibodies that may be drawn with the others for completeness. There's a lot of celiac sprue out there and it's a manageable disease. It may also pick the ultra-rare gliadin-sensitive neropathy, making it treatable. Good luck. Read more...

What is hepatitis b core ab IgG blood test mean?

Prior infection. Indicates that you very likely had hepatitis b at one point in the past. Doe not tell you about current infection or activity of the disease. These require further testing. Read more...