Every time you have a blood test or an IV line in your arm, it damages the veins. Repeated blood tests cause progressive scarring to your veins.
Some people, especially those with kidney disease or diabetes, need a lot of regular blood tests, and their veins can get damaged over time. A few people may go on to need dialysis and a strong, healthy vein in your arm will be important.
This is because to enable dialysis, a ‘vascular access’ or ‘fistula’ is created. This is where an artery and vein are surgically connected to make a ‘supervein’ that can be used to remove and return the blood during dialysis.
Your veins need to be preserved in order to create a successful fistula.