Evaluation of Nickel Allergic Reactions to the Essure Micro Insert: Theoretical Risk or Daily Practice?

There were no statistically significant changes in nickel patch test results and allergy-related symptoms after Essure sterilization. Furthermore, among the patients with a positive patch test before Essure sterilization, the grade of reaction did not increase after sterilization. These results indicate that Essure sterilization likely is not related to nickel sensitization.