Allergen source materials

We produce insect and mould allergens for professionals in the field of allergy and asthma. The cultivation technique we use leads to high concentrations of the major allergens, resulting in strong raw materials, whole cultures, extracts and purified major allergens.

Latest posts

Instructional video ELISA kit

HDM ELISA kits With the release of our house dust mite ELISA kits we have extended our HDM product catalogus. For the house dust mite D. pteronyssinus we have the Der p 1 ELISA kit and Der p 2 ELISA kit available. For the house dust mite D. farinae we have the Der f 1...

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Effective SCIT using purified Der p 1 & Der p 2

Effective SCIT using purified allergens in a murine asthma model Does the use of purified major house dust mite allergens (Der p 1 & Der p 2) in a murine asthma model achieve superior suppression of allergic manifestations compared to an allergen extract? This is the...

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Solubility of HDM extracts

Introduction On this page we describe the results for determining the solubility of HDM extracts. We have dissolved the Dermatophagoides pteronyssinus extract FD (freeze-dried) and whole culture D. farinae extract FD (freeze-dried) in 70% DMSO. We have compared this...

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Stability of freeze-dried material during transport

Products produced by Citeq Biologics are stored at -20°C and transport of these products occurs at ambient temperatures. Therefore, long term stability studies are performed at -20°C and short term stability studies are performed at ambient temperature (transport). In...

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Dissolving Alternaria alternata medium extract

Improper reconstitution of lyophilized (freeze-dried) allergenic extracts can cause variations in allergen content of the same extract after reconstitution and should be avoided. Customers who have used our mould (fungi) extracts had questions about how to dissolve...

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Mixture of house dust mites

Because D. pteronyssinus and D. farinae house dust mites are the most studied species we have developed a mixture of both species. The mixture is available as an extract but also as a whole culture of mites. Dermatophagoides farinae and Dermatophagoides pteronyssinus...

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Our guarantee


Our material will be delivered in freeze-dried (lyophilized) form in different sizes so you always have the right amount available and you are assured of stable material.

Worldwide delivery

Our products are used by researchers and diagnostic companies all over the world. We ship our products with FedEx to your country of choice.



Because of our quality system we produce high quality allergen extracts. Our products will be delivered with a certificate that specifies the amount of allergens, level of endotoxin and much more.

Large batches

We produce large batches so you are assured of material from the same batch over a longer period of time. You can even make a reservation for material from a specific lot.

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How can we help you?

Please let us know how we can help you. Send us a message and we will get back to you right away.

House dust mites

Storage mites