One of the most crucial quality operations in any GMP (good manufacturing practise) organisation is deviation investigations. Additionally, they consistently rank among the top problems mentioned in observations, warning letters, and consent decrees issued by the U.S. Food and Drug Administration (FDA) and other regulatory bodies. 1 (Whether or not the batch has been disseminated, there is a failure to thoroughly review [any unexplained disparity] [the failure of a batch or any of its components to fulfil any of its specifications]). There is no doubt that many businesses can do better when it comes to writing and running deviation investigations. The sections that follow list frequent mistakes businesses make when conducting deviation investigations and explain how to prevent them. Investigations produce a plethora of data over time that can be utilised to enhance processes continuously, boost output, and stop investigations from happening again and again. Unfortunately, this data is often only reviewed by many organisations sporadically, usually once a year. Monitoring emerging problems and taking prompt action to address them require a good trending procedure. You can keep track of investigative data (root cause, functional group, unit operation) to help with ongoing monitoring of the events and root causes taking place in your facility by product, process area, functional group, and other factors, other services IQ, Aptitude test psychometric analysis ans neurological evaluation.