This is where I stand now, coming into a company that did not previously fall under FDA guidelines but now due to new changes in product, new products, and clients that we are manufacturing product for, we have to create a MVP, and need qualification documentation for pretty much everything. previously all that had been validated had been lab processes, some lab equipment, and compounding.
I had been reviewing possible retrospective validation for equipment that has been in place, but not sure where to start or what to do. Any help?
It's really difficult to give specific validation advice without knowing the product/process details but here's some general info. hope it helps.
From FDA's "GUIDELINE ON GENERAL PRINCIPLES OF PROCESS VALIDATION":
B. Retrospective Process Validation
In some cases a product may have been on the market without sufficient premarket process validation. In these cases, it may be possible to validate, in some measure, the adequacy of the process by examination of accumulated test data on the product and records of the manufacturing procedures used.
Retrospective validation can also be useful to augment initial premarket prospective validation for new products or changed processes. In such cases, preliminary prospective validation should have been sufficient to warrant product marketing. As additional data is gathered on production lots, such data can be used to build confidence in the adequacy of the process. Conversely, such data may indicate a declining confidence in the process and a commensurate need for corrective changes.
Test data may be useful only if the methods and results are adequately specific. As with prospective validation, it may be insufficient to assess the process solely on the basis of lot by lot conformance to specifications if test results are merely expressed in terms of pass/fail. Specific results, on the other hand, can be statistically analyzed and a determination can be made of what variance in data can be expected. It is important to maintain records which describe the operating characteristics of the process, e.g., time, temperature, humidity, and equipment settings.(11) Whenever test data are used to demonstrate conformance to specifications, it is important that the test methodology be qualified to assure that test results are objective and accurate.
Source:
FDA's "GUIDELINE ON GENERAL PRINCIPLES OF PROCESS VALIDATION"