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Health and Safety Executive

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Issued: 11 November 2024

Visit HSE’s website for the latest safety alerts and notices

Risk of exposure of laboratory staff to biological agents

Workers at laboratories are being put at risk of infection because of missing information on specimen request forms

If specimen request forms do not provide sufficient clinical information, then laboratory staff cannot identify the appropriate safety measures they need to apply to control exposure and possible infection.

For example, specimens considered likely to contain Hazard Group 3 pathogens requiring propagation or culture must be processed within a containment level 3 laboratory.

HSE investigations have confirmed several occasions when workers have been exposed to pathogens capable of causing severe disease.

Action required

Duty holders should ensure that:

  • specimen request forms contain all relevant clinical information
  • laboratory staff act on clinical information provided
  • record-keeping and IT systems are fit for purpose


For full details view the safety notice.

Health and Safety Executive - 2.2 Redgrave Court, Merton Road, Bootle, Merseyside L20 7HS