Irritation is one of the three most common tests required to ensure the safety of medical devices. Irritation testing is essential in evaluating a device’s potential to cause an immediate irritation reaction following exposure to the body. There are several methods as in vivo and in vitro assays available. Eurofins Medical Device Testing network of laboratories' methods are selected and performed based upon the specific route of exposure to the body, including skin, mucosal or ocular.