Environmental DNA sampling methods vary depending on the unique ecological conditions and goals of individual sampling programs. Peer-reviewed publications usually include summaries of the specific methods used for sample collection, concentration, and preservation, but a handful of published protocols provide more detailed, step-by-step instructions that can be used in many sampling situations. A critical component of these and other sampling protocols is strict adherence to practices for preventing cross-contamination among samples. If you’re modifying existing protocols for a new aquatic system or sampling objectives, continue to follow stringent measures to avoid contamination. Click the tiles below to learn more.