Pharma Industry Interview Question & Answer Part 09 (Audit Trail)


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Question 11: 

Many of our production processes are documented by means of a batch record on paper. What should we do as concerns the review of the audit trail? Should we review the good documentation practice in the batch record by means of an audit trail review?

Best Answer: As long as you only document on paper the audit trail review is not relevant for you, but the 4-eyes-principle for all critical steps.

The following is stated in the FDA Guidelines: "Critical process steps have to be verified by a second individual".
 
Question 12: 

Is it necessary to perform an audit trail review (ATR) after each measurement/analysis carried out at the equipment in the laboratory? Who carries out the ATR - laboratory personnel (operator) or the Head of the Laboratory?

Best Answer: A SOP is required for the ATR for each system that describes the details. The review after completion of the analysis is important.
 

Question 13: 

How do you justify the reintegration of chromatograms versus the method specification in the audit trail?

Best Answer: A reintegration should only be necessary if the analysis wasn't carried out for one reason or another.

The reason has to be specified and must be signed by the management. The laboratory employee is not allowed to take the decision himself.
 
 
Question 14:
 
Can the review of a printout of the drying temperature profile be considered to be part of the audit trail review of the batch?

Best Answer: In my opinion this is a good example for static data for which no audit trail review has to be carried out. The reason is that the user cannot change or access this data.
 
Question 15:
 
Is it acceptable that a user has the entitlement for reintegration at a GC system or should the laboratory manager be the only person authorised to do this? Are there any relevant requirements or recommendations?

Best Answer: This should be regulated internally in an SOP. Preference should be given to the laboratory manager since he has a control function. I know nothing about any requirements concerning this.
 
 
Question 16: 
16 Which measures may be taken if the audit trail (as well as the actual data) can be deleted or changed at the level of Windows?

Best Answer: In the case of systems that can store locally on the HD of the user it is possible to set up two local user profiles. Then, for instance, the system stores data only on the profile the user cannot access.
 
 
Question 17: 

What are the essential parts of an audit trail?

Best Answer: An audit trail has to at least record the critical variables/values, indicate the initial value and the changed one, indicate who has changed what and when.
 
This includes a unique identification of the user, a date and time stamp as well as possibly a
comment. What’s new pursuant to Annex 11 is the comment on the reason for change. Here it would be possible to restrict the number of parameters to be commented by using risk assessment.
 
 
Question 18: 

What are the requirements on a regular evaluation of the audit trail?

Best Answer: Regularly would also be every ten years. The period of time must be substantiated by means of the process risk and documented.

Example: Part of the periodic review or in the case of a batch release, part of the system’s event log, and therefore at every release.
 
 
Question 19:
 
What shall be done in the case of legacy systems without audit trail?

Best Answer: First of all, it must be clarified whether the data can be changed at all (e.g.: electronic recorders or SPS). If not, this should be the reasoning within the risk assessment for the audit trail not being necessary.
 
Define in an SOP that each change has to be documented e.g. in a logbook and verified by
a second person.
 
 
Question 20: 

Is a “paper-based” audit trail also possible?

Best Answer: Not with a new system. If a system is introduced today, it must comply with the requirements of Annex 11.

An exemption are legacy systems, though. In the case of legacy systems this can be regulated by an SOP if it has been checked beforehand that there is no other possibility.
 
 

“Trust but Verify “ Ronald Re

 

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