How long does one have drainage tubes for after Breast Reduction?

Like many of the other responders, I do not use drains for breast reductions. However, when I use drains on other procedures they are removed based on drain output, not on time.

...drains are seldom used these days.  Most of the literature says it doesn't prevent complications (like hematomas or seromas) and may actually contribute to problems.  Obviously it is at your surgeon's discretion though.