No. Since ePTFE is one of the most inert and biocompatible polymers available, there has never been a confirmed allergic reaction to a Gore ePTFE product.

Because of the density differences between ePTFE and the rest of the body, high resolution imaging techniques, such as CT and MRI, will reveal ePTFE, both immediately following implant and after ingrowth at longer time frames. X-rays offer a fairly low resolution level and will not show an ePTFE product. Ultrasound can be impeded in the immediate post-operative period until cells and fluids fill the internodal spaces of ePTFE. Once this has occurred, the sound waves can pass through the material and allow imaging below the patch with ultrasound. Prior to this, it may be impossible to image through the product.

Yes. The amount of radiation needed to degrade ePTFE is substantially above the patient survival dose.

Yes. Because Gore patch products mimic the natural healing of tissue, normal scar formation develops. As a result, surgeons have reported numerous successful re-operations through implanted Gore patch products, finding the healed material easy to identify, dissect and re-approximate.