Blood tests can help with the diagnosis of autoimmune hepatitis. These include tests for increased liver enzymes or antibody levels. However, other tests are necessary to confirm the diagnosis.

Nailfold capillaroscopy is a noninvasive test used to screen for changes in the small blood vessels at the base of your fingernails. It’s most used to identify features of some autoimmune conditions.

An investigational blood test for type 1 diabetes can accurately detect the disorder's characteristic autoimmunity with only small samples of blood, a feature that makes it ideal to screen pediatric ...