The NISIM International website features a clean, blue design with a prominent "NISIM" logo at the top. The left side showcases a search bar, menu options, and a "Home" section, while the right side features a "NISIM NEWHAIR BIOMARKERS" section with a plant and a "NISIM" logo. The website's navigation bar includes a "Call Us" option, a "Home" option, and a "Online Store" option. The website's header includes "McAfee SECURE TESTED DAILY 08-09-08" and "NISIM INTERNATIONAL" in the top left corner.