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In-line & Release Testing

QC requirements from manufacture through RPi batch release

Testing & QC Verified 2026-04-20

Workflow steps

  1. Manufacturing (GMP Site)
    Cannabis manufactured at MHRA-certified or MRA-recognised GMP site. GACP certification required at cultivation stage.
  2. GACP Controls
    Cultivation under GACP standard. UK accepts EU GACP and WHO GACP. Certification by ISO 17065-accredited body required.
    • Irrigation, pesticide, growth logs
    • Initial cannabinoid profiling
    • Environmental monitoring records
  3. In-Process Controls (IPC)
    Manufacturing steps with in-process checks per approved specifications and UK GMP requirements.
    • Weight uniformity checks per unit
    • Cannabinoid content by HPLC at IPC stages
    • Line clearance records
    • Environmental monitoring (Grade C/D for cannabis)
  4. Finished Product Testing
    Full release test panel per UK pharmacopoeia and approved specifications. British Pharmacopoeia (BP) is the reference standard.
    • Identity and assay: THC, CBD (HPLC)
    • Microbiological: TAMC, TYMC, Salmonella, E. coli
    • Pesticide residues (UK MRL basis post-Brexit)
    • Heavy metals: Pb, Cd, Hg, As
    • Moisture (dried flower: ≤10%)
    • Residual solvents (extracts)
  5. All specs pass?
    All results must comply with approved UK specifications and BP limits.
  6. OOS Investigation
    Out-of-Specification investigation per MHRA expectations and ICH Q7. Full root cause analysis required before any retest.
    • Phase 1 lab investigation
    • Phase 2 full manufacturing investigation if required
    • Batch disposition decision: reject or retest
  7. RPi Review & Certification
    UK Responsible Person (Import) reviews complete batch record, all test results, GACP/GMP certificates, and Home Office import license before certifying.
    • Full batch record reviewed
    • All deviations closed
    • GACP and GMP certificates current and in scope
    • Home Office import license valid for this shipment
  8. Batch Released ✓
    RPi-signed certificate issued. Product available for supply to licensed UK pharmacies against specialist Schedule 2 prescriptions.
Export / Import Process