Cannabis Sourcing in Thailand: GACP and Accepted Evidence

Thailand’s sourcing notice recognizes more than one route. Understand Thailand Cannabis GACP, other listed standards and harvest-specific testing before accepting flower.

Cannabis Sourcing in Thailand: GACP and Accepted Evidence
Legislation2026

Our previous headline said that non-GACP cannabis could no longer be sold. That was too broad. The official sourcing notice recognizes Thailand Cannabis GACP and additional routes, with conditions that depend on the source. A buyer needs to establish which route applies and connect the evidence to the actual flower received.

This article concerns source recognition. It does not replace the separate licence, prescription, dispensing or export requirements that may apply to an operation.

Read the actual sourcing notice

The DTAM notice dated 1 September 2025, published in the Royal Gazette on 12 September 2025, distinguishes three routes:

  • Clause 1: sources certified under Thailand Cannabis GACP.
  • Clause 2: sources meeting other listed standards, including specified Thai agricultural standards, EU GACP/GMP and several international or organic schemes. This route also requires the flower-quality testing specified in the annex for each harvest.
  • Clause 3: sources outside the first two clauses that meet the annex’s testing requirements for each harvest. The test certification applies only to that harvest.

Read the exact list and conditions in the official sourcing notice, pages 1–2 and annex. The website upload path says 2026; the document itself is a 2025 notice. A later upload is not, by itself, a new legal amendment.

A certificate and a batch report answer different questions

A source certificate concerns the named operation and the scope of the certification. A laboratory report concerns the sample identified in that report. Neither should be accepted as evidence for an unrelated farm, product or harvest merely because the seller uses the same brand name.

Ask the supplier to explain the applicable recognition route before comparing documents. If they rely on harvest testing, establish how the report connects to this delivery. If they rely on certification, check the certificate’s issuer, holder, scope and dates. Keep the evidence with the transaction so another staff member can follow the same trail.

These are practical verification steps. When a document’s legal applicability is unclear, seek clarification from DTAM or the licensing authority before treating the delivery as compliant.

A receiving checklist for dispensaries

Use a receiving record that keeps these items together:

  1. Supplier identity: legal name, contact and authorization for the transaction.
  2. Source: the growing operation and the recognition route the supplier relies on.
  3. Harvest and lot: identifiers that connect the invoice, packaging and supporting evidence.
  4. Documents: the relevant certification and testing evidence, including the report’s scope and identified sample.
  5. Quantity: the amount received and the inventory entry created from it.
  6. Exceptions: missing, inconsistent or expired documents and the decision taken before stock is released.

For example, a report identifying harvest A cannot simply be renamed to support harvest B. Keep the delivery on hold while the supplier resolves the mismatch. The purpose is to avoid losing the evidence trail as flower moves from supplier packaging into a shop’s inventory.

Verify through an independent channel

Start with the official DTAM medical cannabis portal for agency notices and links to certification information. If a supplier sends a screenshot or an unfamiliar verification website, check the issuer through an independently obtained contact. Do not treat a matching logo as proof.

Record the date of the check and any clarification received. A certificate can be genuine yet unrelated to the location or product being offered. A laboratory report can be genuine yet concern a different sample. Both problems require a specific answer.

What sourcing evidence does not prove

Source recognition does not show that cannabis will treat an individual patient’s condition. It also does not mean that every risk has been tested away. Laboratory findings have a defined sample, scope and method; clinical suitability involves a separate assessment.

Avoid selling a certification as a medical promise. For patients, explain the documented preparation and direct treatment questions to the prescribing professional. For operators, connect accepted source evidence to the required records described in our PT 27–29 and PT 33 guide.

Corrected 6 September 2026. The historical URL is retained so existing links reach this correction. Confirm the applicable requirements with the authority responsible for your licence.

Continue learning

All articles
LegislationPlook Ganja Registration and Growing Cannabis in ThailandLaws and RegulationsCannabis POS Thailand: How PorThorOS Connects Every Sale