How to Ship Clinical Trial Samples Internationally
Shipping clinical trial samples across borders combines several hard problems at once: biological material that may be a dangerous good, a cold chain that cannot break, customs documentation that has to be right first time, and a chain of custody a sponsor will audit. This guide walks the practical sequence, from classifying the material to proving delivery, so a sample arrives usable and the record holds up.
Classify the material first
Everything downstream depends on what you are shipping. Is it a Category B biological substance (UN3373), an exempt human or animal specimen, or something more tightly controlled? Does it need dry ice (UN1845) or a cryogenic shipper? Is it subject to export control or a permit, for example CITES for certain species-derived material? Classify before you pack, because the classification drives the packaging, the documents and the carrier.
Pack for the cold chain and the hazard
- Temperature. Use a qualified shipper rated for the required range and the expected transit time, with a calibrated logger inside.
- Dangerous goods. For UN3373, use compliant triple packaging and the correct marking. For dry ice, declare UN1845 with the net quantity.
- Integrity. Secondary containment and absorbent material appropriate to the specimen.
Get the documents right
- Commercial or proforma invoice with an accurate description and value, and the correct HS code.
- Dangerous-goods declaration where required, matching the packaging and markings.
- Permits where applicable: import permits, CITES, or material transfer agreements.
- A packing list and any sponsor or study documentation the destination expects.
Clear customs without a hold
Customs holds on trial samples are usually about mismatches: a description that does not match the goods, a value that looks wrong, a missing permit, or an HS code that triggers a question. Get the classification and the invoice right, attach the permits, and make sure the consignee is ready to receive and clear. See the destination corridor guide, for example importing into Switzerland, for country specifics.
Prove custody and delivery
A sponsor audit will ask who held the sample, at what temperature, and who received it. Keep a chain of custody from dispatch to delivery, the temperature record for the whole journey, and a delivery confirmation with condition captured. That is the difference between a clean shipment and an unusable sample nobody can account for.
Frequently asked questions
Classify the material, for example a Category B biological substance under UN3373, pack it in a qualified cold-chain shipper with a logger and compliant dangerous-goods packaging, prepare accurate customs documentation with the correct HS code and any permits, clear customs at the destination, and keep a chain of custody and temperature record through to a confirmed delivery.