Management of biological risk in the preanalytical phase

The management of biological risk in the preanalytical phase is based on maintaining the Chain of Biological Safety, which includes the prevention of risks, from the taking of samples to their final destruction as waste.

This entails adopting a strategic and integrated approach to the analysis and management of the risks of contaminants, for persons and the environment, and their adverse effects.

Keys for the correct approach to management

Safe packaging and transport of clinical samples

Before proceeding to package and transport a substance, it is essential to know whether it must be assigned to a certain category and treated in a specific way.

The transportation of substances, according to their classification

The WHO classifies infectious materials in three categories which will determine how they should be treated, and the logistics with respect to transportation.

What should a container be like? Triple packaging

The containers designed for the transportation of infectious substances must always comply with the Triple Packaging System recommended by the WHO.

What tests must a container pass?

Each container must pass strict resistance tests certified by the appropriate competent authority.

Packaging of Category A samples

Category A infectious materials can only be transported in packaging/containers which have passed strict resistance tests.


The different regulations are designed to protect the environment and the persons involved in the handling, packaging and transportation of hazardous biological substances.