Strange colouring in the tube?

[rendez2k]

Hello there! Been a diabetic for over 28 yrs but started pump treatment 3 days ago. I noticed this morning that my 2 day old tube to my pump (Medtronic 640G) has some strange markings inside. I've tried to take a picture. Is this normal? There doesn't seem to be any issue with insulin delivery so is it just where the tubing has twisted etc? Its a MiniMed Mio apparently!

 

[fairylights]

It's normal. My DSN told me it's because the tube is actually two tubes one inside the other and you get the white marks where the inner tube sticks to the outer tube.

 

[gwai84]

Happened to me too, I was convinced I had air bubbles in the tubing or something.
Turned out it's completely normal - it happens whenever the tubing gets bent. Within 24 hours of putting a new tubing set on, mine is covered in them, and I don't notice any more!
Interesting to find out that it's because of there being two tubes!

 

[bobcurly]

Yep daughter gets loads of them. They dont affect the delivery

 

[rendez2k]

Thanks all! Put my mind at rest