PreCheck Health Services, Inc. announced that it has appointed Dr. Mitch Ghen as its chief science officer. As chief science officer, Dr. Ghen will respond to queries regarding clinical or technical issues relating to its product, assist in the evaluation on new products and help in its training and marketing programs. Dr. Ghen will work for the company on a part-time basis. Dr. Ghen is the co-author of Advanced Guide to Longevity Medicine, The Ghen and Raine's Guide to Compounding Pharmaceuticals, The Anti-Aging Physicians' Handbook for Compounding Pharmaceuticals, and The Essentials and Science of IV Parenteral Medicine.