GutMapDx operates under stringent laboratory quality-control procedures and endeavours to process all samples under the appropriate conditions required for accurate and reliable testing. Our laboratory operates to ISO and UKAS-accredited standards, maintaining rigorous protocols relating to sample handling, processing, testing and quality assurance.
Despite these controls, on occasion a sample may be deemed unsuitable for testing or may fail quality-control criteria. A laboratory sample failure does not necessarily indicate an error by the laboratory and may result from a number of factors relating to the sample itself, including collection, quantity, contamination, stability, storage, transport, timing, or other pre-analytical or analytical factors.
A pre-test failure refers to a sample being identified as unsuitable or not meeting the required criteria before testing can be completed. This may include, for example, insufficient sample volume, inappropriate collection, contamination, incorrect sample type, compromised sample integrity, or failure to meet required transport or storage conditions.
A post-test failure refers to an issue identified during or following the testing process whereby the laboratory’s quality-control procedures determine that the result cannot be released with the required level of confidence or that the sample/result does not meet the laboratory’s quality standards. In such circumstances, the laboratory may require a repeat sample or further testing where appropriate.
Our laboratory will always endeavour to test samples wherever possible and will apply the appropriate quality-control procedures to ensure that results are only released where the sample and testing conditions meet the required standards. Where a sample does not meet the required criteria, the laboratory reserves the right not to release a result where doing so could compromise the accuracy, reliability or integrity of the testing.