A batch crosses a border not because a buyer signed a contract, but because four standards, one named release decision and two government permits all agreed on the same lot number.
Requirements confirmed against a regulator or guideline document are marked verified; where they could not be, the text says so.
1. The chain of standards, in order
Four standards govern four stretches of the journey, with narcotics control layered over all of them. Primary processing sits on the boundary, where manufacturing practice may already apply.
| Step | Standard governing it | Core question |
|---|---|---|
| Seed, soil, crop protection, harvest | Good agricultural and collection practice | Identified, traceable, uncontaminated? |
| Manufacture, packaging, labelling, testing | Good manufacturing practice | Provably the same as the last batch? |
| Certification and release | Release function under manufacturing practice | Does one person state it complies? |
| Storage, transport, wholesale movement | Good distribution practice | Did the batch stay intact and traceable? |
| Cross-border movement | Narcotics control law, over all the above | Have both governments authorised it? |
2. The cultivation standard: field to dry flower
The European Medicines Agency guideline on good agricultural and collection practice sets quality standards for obtaining medicinal plants. Seeds must be identified by genus, species, variety and origin, and soil must be free of sludge, heavy metals and residues.
Pesticide use should be avoided as far as possible; where unavoidable, only approved products at minimum effective levels, applied by qualified staff, with a defined interval before harvest. Harvest must be dry and drying conditions recorded. Records cover location, harvest date and quantity, chemicals used and previous crops, with separate batch numbers per growing condition.
3. Manufacturing practice and its certificate
What is certified, and who issues it
Certificates come from regulatory authorities, not consultants or laboratories: reference material names the United States Food and Drug Administration, national agencies within the European Union and the Therapeutic Goods Administration in Australia, and notes the World Health Organization version is used in over one hundred countries.
In Europe the content sits in EudraLex Volume 4, whose Part I runs from the quality system to self inspection and whose Annex 7 covers herbal medicinal products. The decisive rule is documentary: records must show every defined step was taken and be kept so a batch history is fully traceable.
The sources consulted do not give the legal wording of a certificate. Treat this as general industry understanding to confirm with your authority: it records an inspection outcome at a point in time, for a named site and named activities, describing a facility rather than a product.
What an inspection involves
Inspections may be unannounced. As general industry practice rather than verified procedure, an inspection walks the premises against the documented layout, samples batch records to test whether they were completed contemporaneously, and interviews operators.
Cycle length, and what could not be verified
No inspection frequency, certificate validity period or processing time for manufacturing practice could be verified from the sources consulted. Do not plan around a number you have not received in writing.
One duration was verified, and it belongs to the agricultural standard: a Thai legal update by the firm Tilleke and Gibbins states that cultivation-site certification under good agricultural and collection practice is valid for one to three years with annual surveillance.
4. The release function: the gate everything serves
In Europe the release decision is Annex 16 of Volume 4, Certification by a Qualified Person and Batch Release. The title is the point: certification is performed by a person whose name goes on the record.
A test result measures a sample; a release judges a batch. That person asserts it was made by the approved process at a compliant site, that records are complete, that deviations are acceptable, and that it may lawfully enter the destination market. Whether an equivalent function exists elsewhere must be confirmed with that regulator.
5. Distribution practice
Distribution practice is described as a quality warranty system covering purchase, receiving, storage and export of medicines, from the manufacturer’s premises to the end user. Excursions in transit are quality events, and can invalidate a release that was sound when the container was sealed.
6. Narcotics control layered on top
The Single Convention on Narcotic Drugs, 1961 entered into force on 13 December 1964 and had 186 parties as of 2022. Cannabis and cannabis resin sat in Schedule IV, the most restrictive schedule, until the Commission on Narcotic Drugs adopted Decision 63/17 on 2 December 2020 withdrawing them, in force April 2021.
Estimates, quotas and national agencies
Articles 23 and 28 require each party to establish a government agency controlling cultivation for medical and scientific purposes; cultivators deliver their total crop to it, it must take possession within four months after harvest, and it holds exclusive import, export and wholesale rights. Article 28 excludes cultivation solely for fibre and seed.
Article 21 limits annual production and import to what is needed for medical and scientific consumption within estimated limits, for export and for stocks, and Article 9 has the International Narcotics Control Board administer that estimates system. The Board’s estimates pages could not be retrieved, so form names and deadlines are not stated here.
Authorisations, transaction by transaction
The convention requires import and export authorisation for each individual international transaction. The destination authority issues an import authorisation to its licensed importer; the exporting authority then issues a matching export authorisation. Both are transaction-specific and time-limited.
A signed contract, a paid deposit and a booked vessel create no legal right to move goods. If the import authorisation has not issued, has lapsed, or names a different quantity than you produced, the shipment does not leave.
7. Import requirements by destination
Germany
Verified: the medical cannabis law took effect 10 March 2017 for seriously ill patients lacking a therapeutic alternative. The Federal Institute for Drugs and Medical Devices issued cultivation and importation licences, and imports had to meet European good manufacturing practice standards. The Cannabis Act, effective 1 April 2024, removed cannabis from the Narcotic Drugs Act.
Not verified: the German Federal Opium Agency page returned errors on every attempt, so no permit type, form or processing time appears here, and the effect of the 2024 change on import authorisation is unconfirmed.
Czech Republic
Verified: medical cannabis became legal 1 April 2013, allowing 180 grams of dry matter per month on electronic prescription from specialised physicians, with only imported cannabis permitted in the first year to ensure standards. Since 1 January 2026 adults aged 21 and over may grow three plants and hold 100 grams at home; commercial sales remain prohibited.
Not verified: the responsible Czech authority is not named in the material consulted, and no import licence type, specification or testing panel could be confirmed. Do not assume the medical import route is unaffected by the 2026 change.
Australia
Verified: the Therapeutic Goods Administration is Australia’s manufacturing-practice regulator. Not verified: its medicinal cannabis pages could not be retrieved, as the site refused requests, so nothing here describes Australian pathways, standards, testing or import permits. Treat any claim about Australian requirements as unverified until checked against the regulator itself.
Requirements change: the only universal rule
| Destination | Verified here | Not verified here |
|---|---|---|
| Germany | Prescription framework and dates; federal institute licensing role; European manufacturing practice for imports; 2024 narcotics-law change | Permit types, forms, processing times, import route, testing panel |
| Czech Republic | Legalisation date, monthly limit, import-first rule, 2026 cultivation change | Regulator name, licence type, specification, testing panel |
| Australia | Identity of the national regulator for manufacturing practice | Everything else: standards, pathways, permits, testing |
Every framework above changed within the last decade; requalify before each contract.
8. The document pack
| Document | What it demonstrates | Verification status |
|---|---|---|
| Batch manufacturing record | Every defined step performed and recorded | Verified from manufacturing practice rules |
| Certificate of analysis | Results for this batch against an agreed specification | Concept verified; destination limits not verified |
| Certificate of manufacturing practice compliance | Named site compliant for named activities at inspection | Authorities verified; wording unverified |
| Export authorisation | Permission for this transaction to leave | Verified from the Single Convention |
| Import authorisation | Permission for this transaction to enter | Verified from the Single Convention |
| Transport and storage records | The batch stayed within defined conditions in transit | Verified from distribution practice scope |
Quantities and descriptions must match across every one of these documents and the goods themselves.
9. Microbial reduction and irradiation
Destination markets care about microbial load because dried plant material carries it and patients may be immunocompromised. Published research notes limits differ widely, citing United States state rules of 10,000 to 100,000 colony-forming units per gram for total yeast and mould.
That research describes heat, high pressure, chemical treatment, filtration, irradiation and cold plasma, notes electron beam and gamma irradiation are permitted in countries such as Canada and Israel and reduce fungal contaminants to zero, and reports yeast and mould reductions of roughly 6 to 4.5 log with gamma and 5 log with electron beam. The agricultural guideline restricts fumigation to real need and bans ethylene oxide.
The trade-off, stated plainly
Irradiation costs aroma: the research reports gamma irradiation did not change the terpene profile but did reduce overall terpene levels, so relative composition survives and absolute quantity does not. No percentage of terpene loss could be verified.
A producer optimising for aroma and a market optimising for microbial safety pull opposite ways, and the market wins because it holds the import authorisation. Every log prevented upstream by hygiene and rapid drying need not be irradiated away.
10. Stability testing and shelf life
An importer needs a shelf life because a pharmacy needs an expiry date, justified by data. Dried flower is not stable: moisture migrates, cannabinoids convert, terpenes evaporate.
No regulator document setting stability requirements for cannabis could be verified here, so this is general industry practice to confirm with the destination regulator. A programme holds packaged batches of the commercial presentation at defined temperature and humidity, keeps a parallel set under harsher conditions, tests at intervals, and fixes in advance which attributes must stay within limits. Real-time data cannot be produced faster than real time.
11. Contract structure realities
This is commercial practice, not regulation. Title may pass at the farm gate, after release, at the port of departure, or only after the importer’s incoming testing, and each placement puts rejection risk somewhere different.
Rejected material cannot be resold locally or flown back casually: re-export needs authorisations in both directions, and destruction needs supervision and a certificate. The contract should name who pays for storage during the dispute, who pays for retesting and where, and who supplies destruction evidence.
Exposure on a failed shipment is rarely just the goods: add freight, the importer’s handling, storage, destruction or re-export, the wasted permit cycle and the quota space taken.
12. Common failure points
| Failure point | Where it originates | Where it is detected |
|---|---|---|
| Microbial limits exceeded | Humid harvest, slow drying, hygiene, storage humidity | Importer’s incoming testing, after freight is spent |
| Pesticide residues outside the domestic panel | A product legal at home that the destination screens for, or neighbouring drift | Destination laboratory, wider screen |
| Documentation gaps | Records completed after the fact, unclosed deviations, batch numbering that ignores growing conditions | Audit or release decision |
| Labelling in the wrong language or format | Assuming the destination accepts the exporting country’s label | Customs or the importer, before any pharmacy |
| Expired or mismatched permits | Delays outlasting an authorisation, quantities drifting from the authorised figure | The border |
13. Where Thailand sits today
The Narcotics Code took effect 9 December 2021. A Ministry of Public Health notification of 8 February 2022 removed cannabis from Category 5 except extracts above 0.2 percent tetrahydrocannabinol by weight, permitting lower-strength extracts only from plants grown in Thailand. Ministerial permission is required for manufacture, import, export and sale. Flower left the narcotics list on 8 June 2022.
On 26 June 2025 the Notification of the Ministry of Public Health Re: Controlled Herbs (Cannabis), B.E. 2568 took effect, administered by the Ministry of Public Health with the Department of Thai Traditional and Alternative Medicine as main enforcement agency, and requires a prescription for sale.
Decisively for exporters, cannabis flower sold or exported must come from a cultivation site certified under good agricultural and collection practice, with seed-to-sale records covering seed provenance, fertiliser logs, pest-management reports, harvest dates and quality-control tests. Thai law also excludes foreign-majority companies from producing, importing, exporting and processing cannabis.
What remains uncertain
No export permit type, application route or processing time appears here because none could be verified; the sources say only that import and export remain highly regulated. No comprehensive cannabis act had been enacted in the period covered, leaving much of the framework on ministerial notifications, and the minister indicated in 2025 that reclassification as a narcotic remained under consideration.
Whether a destination regulator accepts that certification is a separate question. Build to the strictest standard your target market applies, document as though an inspector will read it in two years, and treat every permit as transaction-specific and perishable.
Exporters and importers: the community learns more from the failure than the success. What actually stopped your shipment, a microbial result, a residue not on your panel, a label, an expired permit, or a document you could not produce when asked? And what do suppliers most consistently get wrong in the first document pack they send? Post the specifics, so the next exporter does not pay for the same lesson.
This article is part of the Asiannabis Community educational series on cultivation standards, testing and export. It is general information, not legal or regulatory advice. Content is for educational purposes within jurisdictions where cannabis is legally permitted.