Yes, DCF can take your kids for failing a drug test, but alcohol that was ingested 24 hours prior will not show up on the test.
Also, really? You just got out of a treatment center and you are drinking wine at dinner? Or wine at all? Or drinking at all? How about you put the kids first and go back into the treatment program until you've truly recovered from your addictions?
Oh sure. You'll lose your kids for using drugs and for failing a drug test when you are under investigation for drug use while being a parent. Our Congress used a one-size-fits-all approach to influence citizens' choices between using drugs and losing their kids.
The flaw in this thinking is that foster care is actually far more harmful than a parent who uses drugs. Especially in Florida, that state is well known for major foul ups when kids are in its foster care. In New York City, the Catholic Church has a hold on the administration of foster care services and there are amazing horror stories: one recent story involved a stoned case worker who drove foster kids to their deaths in her Toyota van.
This inability to lead a nation gave rise to the voting out of certain politicians and that effort will not stop until most are voted out of office and these laws are repealed.