Protecting workers from Laboratory animal allergens (LAA)

Laboratory animal allergens (LAA) are proteins found in the dander, hair, scales, saliva, urine, and other body wastes of laboratory animals. These protein allergens can become airborne  (where they can be breathed in) and can contaminate surfaces or clothing, leading to sensitisation and allergic reactions in individuals who are exposed.

Laboratory animal allergens are a significant cause of occupational allergic diseases, including asthma, among people who work with laboratory animals. Common sources of these allergens include rodents like rats and mice, as well as rabbits, guinea pigs, and other small mammals.

Control of these laboratory animal allergens (which are substances hazardous to health) falls under the COSHH Regulations.  To manage and reduce exposure to these allergens, several typical control measures are recommended:

• Engineering controls: Proper ventilation systems and air filtration can help reduce airborne allergens
• Administrative controls: Implementing good work practices, such as regular cleaning and maintenance of animal housing areas
• Personal protective equipment (PPE): Wearing masks, gloves, and lab coats to minimize direct contact with allergens.