What does the analysis involve?
The samples are processed as follows:
How long can water samples be kept by the laboratory prior to analysis?
According to the Natural England technical advice note once collected, the samples can be stored for 1 month in the refrigerator prior to analysis. If possible, samples should be stored refrigerated before they are returned to us.
What do my results mean?
An inconclusive result may be due to the water chemistry, sediment or other debris in the sample. The pond could be retested (a new sample would be required) but if the water chemistry was the cause of the inconclusive result - the re-test would also be inconclusive.
Inhibition and Degradation results are noted in the report
If degradation (the results from the degradation control assay were outside of accepted limits) or inhibition (something in the DNA extract prevented PCR amplification) were observed, negative results will be reported as inconclusive.