That’s too long. I had mine flushed every 6 weeks to prevent infection and blood clotting. It’s been doing well.

4 weeks

I went 6 weeks and when my port wouldn't flush and had to get Tpa. I made sure I went every 4 weeks when I was NED. That was the only time I experienced it. Back on my second round of chemo and will be going for chemo infusions every two weeks for
the next six months.

4 weeks

Thank you all for responding. Internet answers range from 4 to 16 weeks—confusing!