ensure data integrity, GMP compliance, and a robust scientific rationale for handling such events.

2. Scope

This SOP applies to all AMD studies conducted on raw materials, in-process samples, finished products, and stability samples wherein the result, although within specification, deviates from historical data or expected trends. It encompasses chromatographic, spectroscopic, titrimetric, and other analytical techniques.

3. Responsibilities

• Analytical Scientist: Identifies and initiates investigation of OOT result.
• AMD Supervisor: Reviews data and trends, assigns investigation ownership, and ensures timely closure.
• QA Unit: Ensures compliance with investigation timelines and verifies scientific justifications.
• Statistician (if applicable): Supports data trend analysis using statistical tools.

4. Accountability

The Head of Analytical Method Development is accountable for ensuring all OOT results are appropriately investigated and documented, maintaining data quality and compliance with regulatory expectations such as ICH Q10 and WHO TRS guidelines.

5. Procedure

5.1 Identification of OOT Result

1. OOT result is flagged when the analytical result, although within specification, shows a significant deviation from historical trend.
2. Trend charts and control limits established in method development protocols are the primary reference.
3. OOT may be observed in assay, dissolution, impurities, pH, viscosity, or other measured parameters.

5.2 Initial Verification and Documentation

1. Analyst shall halt further processing and inform the AMD supervisor immediately.
2. Fill Annexure-1: OOT Notification and Verification Form with initial observations.
3. Repeat analysis only if allowed per SOP, and only after preliminary approval by the supervisor.

5.3 Investigation Process

1. Use the structured RCA format in Annexure-2 for investigating potential causes.
2. Check for analyst error (sample handling, dilution, instrument setup, transcription mistake).
3. Evaluate instrument performance logs (calibration, maintenance, system suitability).
4. Assess reagent integrity, environmental conditions, and method parameters.

5.4 Categorization of OOT

• Assignables: Errors due to instrument malfunction, incorrect preparation, contamination, etc.
• Non-Assignables: Root cause not identifiable; may require method robustness enhancement or risk-based conclusion.

5.5 Data Analysis and Trend Evaluation

1. Review previous data sets of the same product/method to confirm trend boundaries.
2. Apply statistical tools such as control charts, regression analysis, or moving average methods.
3. Compare current result against historical means and standard deviations.

5.6 Corrective and Preventive Action (CAPA)

1. Based on the investigation outcome, assign CAPA in Annexure-3.
2. Examples: calibration schedule revision, retraining, environmental monitoring, SOP updates.
3. Track closure timelines and responsible personnel for each action item.

5.7 Report Closure

1. Summarize findings, trend data, statistical evaluation, and CAPA in the final OOT Investigation Report (Annexure-4).
2. QA shall review and approve closure after verifying completeness and compliance.
3. Archive report in AMD quality documentation repository with traceable report ID.

6. Abbreviations

• OOT: Out-of-Trend
• RCA: Root Cause Analysis
• CAPA: Corrective and Preventive Action
• QA: Quality Assurance
• AMD: Analytical Method Development

7. Documents

1. Annexure-1: OOT Notification and Verification Form
2. Annexure-2: OOT Investigation RCA Worksheet
3. Annexure-3: CAPA Summary Log
4. Annexure-4: OOT Investigation Closure Report

8. References

• ICH Q10 – Pharmaceutical Quality System
• ICH Q9 – Quality Risk Management
• WHO TRS 996 Annex 7 – GMP for Pharmaceutical Products
• 21 CFR Part 211 – cGMP Regulations

9. SOP Version

Version: 2.0

10. Approval Section

	Prepared By	Checked By	Approved By
Signature
Date
Name	Karan Mehta	Dr. Priya Deshmukh	Dr. Nilesh Sawant
Designation	Analyst	QA Reviewer	Head – AMD
Department	Analytical Method Development	Quality Assurance	Analytical Method Development

11. Annexures

Annexure-1: OOT Notification and Verification Form

Includes sample ID, method, result observed, expected trend range, instrument details, analyst remarks, and supervisor initials.

Annexure-2: OOT Investigation RCA Worksheet

Used to structure the root cause evaluation, covering potential sources such as material, method, machine, man, and environment.

Annexure-3: CAPA Summary Log

CAPA ID	Description	Assigned To	Target Date	Status
CAPA-OOT-349-01	Recalibration of UV-Vis Spectrophotometer	Engineering	05/06/2025	Completed

Annexure-4: OOT Investigation Closure Report

Summarizes the full investigation, outcome, statistical justifications, and CAPA status. Reviewed and approved by QA Head.

Revision History:

Revision Date	Revision No.	Details	Reason	Approved By
01/06/2025	2.0	Included trend charts and statistical tools	Annual SOP Review	Dr. Nilesh Sawant
20/04/2022	1.0	Initial Release	New SOP	QA Head