Monitoring hormone levels in saliva can be used to assess female reproductive health, which can yield many benefits to individuals. For example, those that have fertility issues can use hormone levels in saliva to improve their chances of conception, while the monitoring hormone levels over time could also be used to track and help treat disease. The project proposed here will yield a simple, and inexpensive tool that can be used at home (not in a clinic) to allow one to monitor hormone levels in saliva over time, e.g., daily.