It's easy to think of a specimen as just a small tube in a bag. But once a sample might contain something infectious, the rules change. Many pathology specimens are classified as dangerous goods, and that decides how they're packed, labelled and carried on the road.
If you coordinate pathology transport in Sydney, here's what Class 6.2 actually means, in plain terms.
01 · ClassificationWhat "Class 6.2" means
The Australian Dangerous Goods (ADG) Code sorts hazardous items into classes. Class 6.2 covers infectious substances: material known or reasonably expected to contain pathogens. A large share of pathology and diagnostic samples fall under this class.
Within Class 6.2, most diagnostic specimens are handled under the "Category B" heading, using the UN3373 marking and Biological Substance, Category B labelling. The point isn't the jargon. It's that a defined, testable standard applies to how the sample travels.
02 · PackagingThe triple-packaging rule
The backbone of specimen transport is triple packaging. Three layers, each doing one job:
- Primary receptacle. The sealed tube or container holding the sample itself.
- Secondary packaging. A leak-proof layer around the primary, with enough absorbent material to soak up the contents if the tube breaks.
- Outer packaging. A rigid outer box, correctly marked and labelled, that protects everything inside during handling and transport.
Done properly, a dropped or knocked package still keeps the sample contained. That's the whole idea: protecting the courier, the public and the next person who handles it.
Correct triple packaging keeps a specimen contained even if the outer box is dropped or knocked in transit.
03 · CustodyChain of custody and documentation
Compliance covers the paperwork as well as the packaging. It means being able to show who had the specimen, and when. A clear chain of custody means:
- The pickup is recorded, with time and location.
- The specimen stays with one carrier, not passed down a chain of vans.
- Delivery is confirmed and documented at the receiving lab.
For time-critical samples, this record is as valuable as speed. If a result is ever questioned, you can trace exactly how the sample travelled.
04 · LicensingWho is allowed to carry them
Because Class 6.2 sits under the ADG Code, the carrier needs the right licensing and training, along with a suitable vehicle. A general courier moving infectious substances without ADG7 competence puts your samples, the public and your own lab's standing at risk.
This is why many labs separate their courier arrangements: a general parcel service for office freight, and a specialised medical courier for anything clinical.
05 · SummaryThe short version
Safe pathology specimen transport in Sydney comes down to three things: correct triple packaging, a documented chain of custody, and a carrier licensed to handle Class 6.2 goods. Get those right and the tube in the bag travels exactly as it should.
MedPulse Logistics runs urgent and scheduled pathology transport across Sydney and NSW, ADG7 licensed for Class 6.2 infectious substances, with chain-of-custody documentation on every run.