Medical gloves are disposable gloves used during medical examinations and procedures to help prevent cross-contamination between caregivers and patients. Medical gloves are made of different polymers including latex, nitrile rubber, polyvinyl chloride and neoprene; they come unpowdered, or powdered with cornstarch to lubricate the gloves. Selecting The Right Glove: Understanding Latex Allergy And Glove Chemistry. Over the past few years, there has been an increasing incidence of allergic reactions among health care workers to latex medical gloves. By: Abby Plambeck, American Latex Allergy Association Newsletter Editor If you have a latex allergy, you could be in danger of having an allergic .