How to Document Deviation Root Cause for FDA Inspection
If this question was asked in your next FDA inspection:
"Who determined the root cause of this deviation — and how did they rule out alternative causes before authorization?"
Could your team produce that record immediately?
Most organizations cannot. Not because the investigation failed — but because the authorization record does not exist.
Personal Exposure Check
- Can you identify who evaluated the root cause evidence?
- Can you show what data they reviewed at the time of the decision?
- Can you produce the criteria used to authorize the root cause determination?
If any answer requires reconstruction, you have inspection exposure.
Root cause conclusions are the most frequently challenged decisions in deviation inspections.
This is the record investigators expect to review during deviation investigations.
Inspector Reality
The investigator does not explore your process.
They isolate a decision and ask:
"How did you determine this was the root cause — and what evidence ruled out other causes?"
Then they wait.
They are evaluating whether your conclusion was justified — or assumed.
At that moment, your team either produces the record — or begins reconstructing it under observation.
If this inspection happened tomorrow:
- You produce the authorization record immediately or
- You reconstruct the decision under inspection
There is no third outcome — and no time to create the record once the question is asked.
Authorization Gap
The deviation record documents what was investigated.
It does not document:
- Who authorized the root cause determination
- What evidence was evaluated at the time of authorization
- What regulatory standard governed that conclusion
That is the gap.
The root cause conclusion was reached.
The basis for that conclusion was not documented at the time it was made.
Case File Preview
Investigator Question: "Who determined the root cause of this deviation and what evidence did they evaluate before authorization?"
What Exists
- Deviation record
- Investigation evidence
- Closure signature
What Doesn't Exist
- Defined root cause criteria
- Evidence evaluation at decision point
- Authorization record tied to regulatory expectation
Result: The investigation was conducted correctly. The supporting evidence exists.
The authorization record does not.
The investigator expects it to already exist.
Most teams only realize this gap during inspection. By then, it is too late to create the record.
Produce the Deviation Root Cause Authorization Record — before your root cause determination is challenged