OPC has pioneered a type of redaction specifically designed to fit within the legislative requirements and the cautious approach to the management of patient data in primary care.

The OPC redaction library LR2 is designed to be used across a number of areas quickly removing identifiable data in a selectable multi level process whilst also ensuring the available computing resources are used appropriately without impacting on practice operation.

Through extensive redaction testing OPC has highlighted that context is important in medical records. So words are redacted or not according to a set of algorithms these includes regular expression, language analysis and exclusion lists of words with dual meanings like Gilbert and Donohue syndromes.


The requesting service provides a line of text to the LR2 library for redaction.

The library first performs the initial redaction, this removes details that pertain to the person, for example their name, gender, address and contact details.

Once initial redaction is complete the redactor can then perform our enhanced redaction this requires the transmission of the redacted text securely across the internet.

This transmission is completed with no contextual information such as a patient identifier, source site or the location that the request came from being transmitted.

The OPC web service then compares each word to our global name and address library and removes if a match is found. This further removes the potential of identifiable data being retained in the text.

The text is then returned to the requesting service to be integrated into the record for analysis.