[What is Medical Alert Jewelry] Medical alerts are bracelets and necklaces marked with a medical caduceus or staff of life symbol, which indicates the presence of medical information. 95% of first responders check the neck and wrist for medic alert jewelry, which can include pendant or dog tag necklaces as well as a variety of bracelet types, such as hypoallergenic cuffs, classic med ID chains, stretch styles, silicone med alert bands, and more.