What are the tests for fetal alcohol syndrome?

None specific: History of alcohol consumption during pregnancy, especially if mother is a known alcoholic. Maternal blood alcohol levels can be measured during pregnancy. Any alcohol level in baby after birth, which would indicate alcohol consumption by mother very close to onset or during labor. Some babies have a typical fetal alcohol face - see google. Later some psychological tests can be useful.

None exist: There is no lab test. There are only the pattern of damage left behind.The first reported cases (1950's) were born to alcoholics, more than half of whom died within a year from their disease.These initial kids defined the pattern of facial features, heart defects and learning problems seen. Over time, lesser intensity exposure in pregnancy were found to trigger similar problems at lesser degree.