increased risk for later developing episodes of  major depressive disorder or bipolar disor-
der if mood symptoms contin ue following the remission of symptoms meeting Criterion A
for schizophrenia. There may be associated al cohol and other substance-related disorders. 
There are no tests or biological measures that can assist in making the diagnosis of
schizoaffective disorder. Whether schizoaffe ctive disorder differs from schizophrenia