Does EtG accumulate?

I'm curious, does EtG, or ethyl glucuronide, accumulate in the body over time? If so, how does this affect testing for alcohol consumption? Could a person who has consumed alcohol in the past still test positive for EtG even if they're not currently under the influence? I'm interested in understanding the specifics of how EtG is metabolized and whether or not it can provide an accurate picture of recent alcohol use.