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What is a Certificate of Analysis (COA)? A Patient Guide

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What is a COA?

  • A Certificate of Analysis is a document from an accredited independent laboratory
  • It confirms the composition and quality of a specific batch of medical cannabis
  • It is a cornerstone of EU-GMP quality framework and pharmaceutical supply chain transparency
  • Every patient should ask for — and receive — a COA for their prescription product

A COA is your quality guarantee. It tells you exactly what is in your medication and confirms it is free from harmful contaminants.

What a COA Contains

  • Cannabinoid profile: THC, CBD, CBG, CBN, CBC, THCA, CBDA concentrations
  • Terpene profile: aromatic compounds and their concentrations
  • Pesticide screening: tested against agricultural chemical panel
  • Heavy metals: arsenic, cadmium, lead, mercury
  • Microbiology: E. coli, Salmonella, mould, yeast levels
  • Batch number and expiry for traceability

Cannamedical Britannia provides batch-level COA documentation for every product in our formulary. Prescribers and pharmacies can request the full COA library.

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EU-GMP Certified Strains

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LA Confidential medical cannabis strain UK
EU-GMP
Indica

LA Confidential

THC19-25%
CBD0.2%
View Strain
Purple Punch x Zkittlez medical cannabis strain UK
EU-GMP
Hybrid

Purple Punch x Zkittlez

THC22%
CBD0.3%
View Strain