About ACTT

A Pioneer in Allergy Immunotherapy



Our history dates back to 1923 when the first allergen extracts were produced at the pharmacy of Copenhagen University Hospital.

Since 1923, ALK has exemplified scientific leadership in the field of allergy research and in the treatment of allergic disease in humans. We are proud to announce our expansion into the animal health industry, and now expand our allergy focus to include the very important veterinary allergy market.

Over the years, allergy practitioners in human medicine have come to expect high standards in the products and services ALK has to
offer. ALK strives to respond to the evolving needs and challenges facing allergy practices every day, and this commitment now includes our veterinary partners.



In early 2014, ALK, the world’s leading allergen extract manufacturer, announced the acquisition of Bio-Medical Services, a veterinary reference laboratory who pioneered in vitro serum IgE allergy testing in the veterinary industry.

Through the ACTT Allergy Program, ALK offers serum IgE allergy testing, bulk allergen sales for the veterinary dermatologist, and allergen-specific immunotherapy treatment, including sublingual immunotherapy (drops). Together, we fight the cause of allergic disease for people and their pets.


ALK History

ALK has exemplified scientific leadership in the field of allergy research and in the treatment of allergic disease in humans and pets for 90 years.

Our history begins when the first allergen extracts were produced at the pharmacy of Copenhagen University Hospital. Since then, ALK has exemplified scientific leadership in the field of allergy research and in the treatment of allergic disease in humans. Our allergy focus has been broadened to include the very important veterinary allergy market. Over the years, allergy practitioners in human medicine have come to expect a high level of standard in the products and services ALK has to offer. We strive to respond to the evolving needs and challenges facing allergy practices every day, and this commitment now includes our veterinary partners.

We believe we can best support the allergy specialist by providing a thorough characterization of the extracts being used to test and treat the allergic patient. We also source 80% of our own raw materials, so we can price our products competitively within the industry.

Contact Us

For shipping, please use our physical address:

ALK – ACTT Allergy Testing
2 Channel Drive

Port Washington, NY 11050

For veterinarians and their staff:
800-444-2370 or
512-794-9655

For Veterinary Dermatologists and their staff: 800-325-7354