From a mock crime scene and cancer diagnostics to environmental analysis, the National Health Laboratory (LNS) showcased its diverse specialisations over the weekend.

A range of interactive stands and guided tours allowed visitors to discover how scientific analysis supports everyday life and deepens our understanding of the world around us.

One section focused on health protection, addressing issues such as mould, pollution, and other harmful substances that can affect well-being.

Françoise Schaefers, head of the relevant department, highlighted that work at the LNS covers a broad remit and plays a key role in protecting the health of both patients and the population in Luxembourg, describing it as a highly engaging field.

Other stations offered insights into microbiology, molecular genetics, and pathology. Demonstrations included how organ and tissue samples are analysed under the microscope to diagnose diseases.

Daniel Stieber, head of the molecular genetics laboratory, explained that advances in genome sequencing have made it more accessible and affordable to collect and interpret vast amounts of genetic data.

According to Stieber, the current challenge lies in interpreting this information to determine which genetic variations are responsible for specific diseases.

Particular interest was drawn by the forensic genetics stand. At a reconstructed crime scene, staff demonstrated how biological traces are documented, secured, and analysed.

LNS director Thomas Dentzer pointed out that, in practice, their work differs from what is often depicted in films. He explained that LNS staff rarely attend crime scenes directly, instead working closely with the police, who collect the traces on site. These samples are then analysed at the LNS to identify DNA evidence.

The forensic genetics department is celebrating its fifteenth anniversary this year. Since its creation in 2011, it has become an essential part of judicial investigations, conducting around 29,000 expert analyses since 2012.