Resource
eDNA Surveying Calendar
Collect eDNA samples at the right time of year to achieve the most accurate results
Inside this guide
The time of year that eDNA surveying work takes place can impact results – especially when testing for a specific species. Some species release more eDNA at certain times of the year and are therefore easier to detect at these times. To help you in planning the timing of your survey work, and to achieve the most accurate results possible, our surveying experts have compiled these guidance calendars.
These calendars cover all of our single-species tests, including Great Crested Newts, Jefferson’s Salamander, Signal Crayfish and Chinese Mitten Crabs.

What’s inside
- Find out the best times to monitor hard-to-detect species using eDNA
- Covers species across Europe and North America
- Speed up project timelines with 10 day turnaround times for single-species tests
- Reduce risk posed by invasive species before populations reach visible levels
- Inform Environmental Impact Assessments (EIA), reducing risk of non-compliance and reputational harm
- Improve stakeholder communications with high impact visuals and easy-to-understand metrics