How much/little drainage does there have to be to have a seromacath removed?

When getting a seromacath, what is the drainage requirement to have it removed? When my original drain was pulled it was under 25 cc's for a couple days. Then I got a seroma, and am getting a seroma cath. I'm wondering how long it stays in for? Is there a minimum cc amount before it will be removed? Or is it a time frame?