COA explainer · Around the world
Thailand: from certified farm to prescription, what proves it is safe
Play it: the batch moves through Thailand's medical-only workflow on the left, and each safety artifact snaps onto the package on the right, color-coded by who adds it.
Sample data · Thailand (Ministry of Public Health · DTAM) · for illustrationPublished
🏷️ The product label, building live
Doi Saket · Medical Cannabis Flower
Prescription Cannabis Flower, controlled herb
Fictional sample label for illustration, not a compliant, printable label.
🌱 GACP Farm adds it🔬 Lab adds it🩺 Doctor adds it🏪 Dispensary adds it🏛️ DTAM (always required)
The big idea: Thailand flipped from the world's most permissive cannabis market to medical-only in about three years, entirely by health-ministry decree, with no full law yet. Today legality and safety are the same question: a doctor's prescription (PT 33), a GACP-certified farm, and a batch COA from an accredited lab. No prescription, no legal sale.
Sample label for illustration, not a compliant, printable label. Thailand rules (Ministry of Public Health orders, DTAM controlled-herb framework), current 2026. Educational, not legal advice.
Step by step: Thailand
- Step 1: GACP-certified farm (GACP Farm) A GACP-certified farm grows and harvests the crop. The Department of Thai Traditional and Alternative Medicine audits soil, water, pesticide use, and handling.
- Step 2: Batch lab test, COA (Lab (DMSc)) The government's Department of Medical Sciences or an accredited lab tests every crop cycle and issues a Certificate of Analysis.
- Step 3: Controlled-herb status (DTAM) Flower is regulated as a controlled herb under traditional-medicine law. Potency sets legal status: extracts above 0.2% THC are treated as narcotics.
- Step 4: Doctor's prescription (Doctor) A licensed practitioner writes a prescription, the PT 33 form, valid up to 30 days. No prescription, no legal purchase.
- Step 5: Licensed dispensary sale (Dispensary) A licensed health outlet with a practitioner on-site sells only against a valid prescription and keeps it on file. Walk-in, online, and vending-machine sales are banned.
Frequently asked questions
Who tests cannabis in Thailand?
The government's Department of Medical Sciences, or an accredited lab, tests every crop cycle of Thai medical cannabis and issues a Certificate of Analysis covering potency, pesticides, heavy metals, microbials and moisture. The Department of Thai Traditional and Alternative Medicine audits the GACP-certified farm's soil, water, pesticide use and handling, and flower is regulated as a controlled herb.
Who pulls the sample in Thailand?
Thailand's chain has no separate sampling firm: the GACP-certified farm grows the crop, the government lab tests each cycle, and the gate is the doctor. A licensed practitioner writes the PT 33 prescription, valid up to 30 days, and a licensed dispensary with a practitioner on-site sells only against it. Walk-in, online and vending-machine sales are banned.
What has to be on a cannabis label in Thailand?
A Thai package shows the net weight and GACP farm certificate, the THC and CBD from testing with the safety screen and Certificate of Analysis number, the controlled-herb status (medical-only, with extracts above 0.2% THC treated as narcotics), and the PT 33 prescription number kept on file by the dispensary. No prescription, no legal sale.
Keep reading
Educational information only, not medical advice. Terpene and cannabinoid effects are an active area of research and vary by person, product, and dose. Cannabis is for adults 21+ where legal.
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