How accurate is eDNA testing?

Natural England’s eDNA protocol has proved to be a rapid and effective way to test for the presence/absence of great crested newts.

Biggs et al. (2015) showed that when newts were present, eDNA was 99.3% effective at detecting newts in ponds where they were known to occur. No false positive were reported for this study and 8.7% of sites had false negative (newts were present but not detected) results. This compares to detection efficacy of 76% for bottle trapping, 75% for torch surveys and 44% for egg searches.

Biggs et al. (2015) Using eDNA to develop a national citizen science-based monitoring programme for the great crested newt (Triturus cristatus). Biological Conservation 183 (2015) 19–28.

Other FAQs

What is eDNA?

How accurate is eDNA testing?

re you able to detect multiple species?

Are you able to estimate GCN population size using eDNA analysis?

Do I need a GCN licence to survey?

When can samples be taken?

Do you perform out of season eDNA testing?