Insulin pump tubing turning black?

Just when I thought I “knew it all” something unexpected happened. I was about to go to sleep when my boyfriend said, “Why is your pump tubing black?” At first I thought that it was just reflecting my clothing but upon further inspection I found out that wasn’t it. Needless to say I changed my site and my tubing just to keep things hunky dory. I even washed the outside of the tubing but it was still black. Had anyone else had this problem with any pump?

Maybe from some kind of dye in your clothing? Did you wear it with new clothing, dark colored, etc?

I know it’s 4 years after the post and it’s just happened to me. Definetly not clothing - it’s also from the top of the reservoir and stops about 10cm from the clip onto the shorter tube. Have changed to fresh everything - I’ve got an appointment with my nurse tomorrow and am going to take it to show her.

1 Like

Did you ever get a answer on this. This just happened to my son and I freaked out as he went out with some people and they had him take his pump off and they dropped him off somewhere and took off on him and then threw his pump in our yard and then we discovered this. I freaked out.

1 Like

Who the hell are the kids he is hanging out with?

This sounds out of control.

I hope he is done with these friends. Next time he could end up dead.
Too much time off his pump and he will move into DKA pretty fast.

If I was a teenager and someone tried to make me take off my pump, he would likely be punched in the face.

You have a lot more problems than discolored tubing.

1 Like

He is not hanging with them anymore. He was just excited that old school friends wanted to hang out. Trying to get answers to this.

I expect readers will find it hard not to be diverted from the main question by the bullying (?) part of the story. But to address your concern, I’ve been using Medtronic pumps and insets for ~10 yrs but have never encountered this. Have you tried contacting Medtronic tech support?

And welcome to the forum!

Its hard not to focus on the bullying because the bullying my just be the cause of what happened to his pump. He was forced or coerced into removing his pump and then he was separated from it. What happened to his pump while it was out of his control, could there have been a substance added to the reservoir that caused the discoloration to happen.

Sorry for replying so late on this. I suspect it is blood that back flowed into the tubing.


I’d suspect blood in the tubing, too, except when that happens to me, it definitely looks red, not black.

Blood turns black if you don’t change it after a day. Maybe you didn’t notice it when it was still red