This document describes a magnetic bead-based kit for isolating DNA from preserved saliva samples. The kit provides a rapid method for purifying high-quality, inhibitor-free genomic DNA from saliva samples in as little as 30 minutes. Comparisons between the magnetic bead kit and Norgen's column-based saliva DNA isolation kit show the two methods produce DNA of similar integrity, yield, and concentration, demonstrating the consistent performance of the magnetic bead system. The purified DNA is suitable for downstream applications such as PCR, sequencing, and microarrays.