🧪 SOP for Sample Management in Quality Control Laboratory

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🧪 SOP for Sample Management in Quality Control Laboratory

1. Introduction

Sample management in the Quality Control (QC) laboratory ensures that samples are handled in a controlled, traceable, and compliant manner throughout their lifecycle. Improper sample handling can lead to invalid test results, data integrity issues, and regulatory observations.

Example: A mislabeled finished product sample may lead to incorrect batch release or rejection.

2. Purpose

To define a detailed procedure for receipt, identification, storage, testing, retention, investigation handling, and disposal of samples in the QC laboratory to ensure accuracy, integrity, and GMP compliance.

3. Scope

This SOP applies to all samples received in the QC laboratory including:

  • Raw materials (API, excipients)
  • Packaging materials
  • In-process samples
  • Finished products
  • Stability samples
  • Validation and investigation samples

4. Responsibilities

  • QC Analyst: Receipt, testing, labeling, and documentation.
  • QC Supervisor: Verification, review, and compliance monitoring.
  • Quality Assurance (QA): Oversight, audits, and final decisions.
  • Warehouse / Production: Proper sampling and timely submission.

5. Definitions

  • Representative Sample: Sample that accurately reflects the batch quality.
  • Chain of Custody: Documented history of sample handling.
  • Retention Sample: Stored sample for future reference.
  • OOS Sample: Sample giving out-of-specification result.

6. Procedure

6.1 Sample Receipt

  • Receive samples only from authorized sampling personnel.
  • Verify container integrity, seal, and labeling.
  • Check sampling request, batch number, and quantity.

Example: If an API sample is received without batch number or seal, it shall be rejected and QA informed.

6.2 Sample Registration

  • Assign a unique laboratory sample number (e.g., QC/FP/2025/001).
  • Enter details in sample receipt register or LIMS.
  • Record date of receipt, tests required, and analyst name.

Example: Finished product Paracetamol 500 mg, Batch PCT0126, assigned Lab No: QC/FP/026.

6.3 Sample Labeling & Status Identification

  • Affix label with sample name, batch number, lab number.
  • Use status labels:
    • UNDER TEST
    • APPROVED
    • REJECTED
    • HOLD

Example: During testing, sample container must carry “UNDER TEST” label to avoid mix-up.

6.4 Sample Storage

  • Store samples as per specification (room temperature, refrigerator, freezer).
  • Segregate raw material, finished product, and stability samples.
  • Monitor temperature and humidity daily.

Example: Stability samples stored at 40°C/75% RH shall not be stored with routine samples.

6.5 Sample Issuance for Testing

  • Issue only required quantity for testing.
  • Record issuance in sample usage log.
  • Prevent cross-contamination during handling.

Example: Only 20 tablets issued for dissolution test; remaining tablets returned to storage.

6.6 Sample Analysis

  • Perform testing as per approved STP or pharmacopoeial method.
  • Use calibrated instruments only.
  • Document results contemporaneously.

Example: pH result recorded immediately after measurement, not at end of shift.

6.7 Handling of OOS / OOT Samples

  • Immediately label sample as “OOS UNDER INVESTIGATION”.
  • Segregate sample and prevent disposal.
  • Initiate OOS investigation as per SOP.

Example: Assay result of 88% against limit 95–105% triggers OOS procedure.

6.8 Retention Samples

  • Retain required quantity as per regulatory requirement.
  • Store in labeled, sealed containers.
  • Maintain retention sample register.

Example: Finished product retention sample stored for one year after expiry.

6.9 Sample Disposal

  • Dispose samples only after QA approval.
  • Follow hazardous waste disposal SOP.
  • Record disposal details.

Example: Expired stability samples disposed after QA authorization.

7. Data Integrity & Compliance

  • Follow ALCOA+ principles.
  • Ensure full chain of custody.
  • No undocumented sample handling.

8. Safety & Precautions

  • Use PPE during sample handling.
  • Handle potent and hazardous samples in containment.
  • Clean spills immediately.

9. References

  • WHO GMP Guidelines
  • EU GMP Chapter 6
  • US FDA 21 CFR Part 211
  • ICH Q7 & Q10

© 2025 sopnest.blogspot.com. All rights reserved. This content is independently written and intended for educational purposes. References to regulatory guidelines are for compliance guidance only.

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