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Crayfish eDNA Service

The analysis of white-clawed crayfish (Austropotamobius pallipes), signal crayfish (Pacifastacus leniusculus) and/or crayfish plague (Aphanomyces astaci).

SureScreen are currently the only laboratory that can test for white-clawed crayfish using eDNA.


Our kits here include everything you need to take a sample. SureScreen have managed to develop a disposable single use kit using a syringe and DNA filter which prevents the need for hiring heavy pumps and vastly reduces the risk of contamination between sites.

Crayfish eDNA Season: 1st April to 30th October

Although SureScreen have been able to pick up crayfish eDNA throughout the whole year, the concentration and therefore the probability of picking up crayfish DNA in a body of water reduces when the species are in a torpid state or are less active from November to April.

Included in the kits is a sample collection form with a summary method of how to take an effective sample as well as a detailed method to ensure best results in various situations.


After collection, samples should be kept in a cool dry environment and sent back to the laboratory as soon as possible. As a maximum guide, samples should be returned within 2 weeks in a cool dry environment.

The analysis method originated from the Natural England approved method of analysing for the Great Crested Newt, though we have made several optimisations for crayfish. When sending the kits back with the collection form, let us know whether you’d like us to analyse for one, two or three of the targets below.

Target species:

  1. White clawed crayfish          Austropotamobius pallipes.
  2. Signal crayfish                       Pacifastacus leniusculus.
  3. Crayfish plague                      Aphanomyces astaci.



£25.00 including free next day delivery


One Target:     £140.00

Two Targets:   £170.00

Three Targets: £200.00

Turnaround times are up to 10 working days from receiving the sample at the laboratory. Costs exc vat.


Click here to see our most frequently asked questions.

More information

There are many other species of  Crayfish, SureScreen can also test for narrow clawed crayfish (Astacus leptodactylus), red swamp crayfish (Procambarus clarkii), marbled crayfish (Procambarus fallax) and rusty crayfish (Orconectes rusticus). Other species may be able to be tested on request.

Our methods have been developed and optimised since 2015. For more information see our crayfish presentation here.

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