Lonza - cryopreserved Leukopaks

Lonza introduces high-quality cryopreserved Leukopaks

Lonza - cryopreserved Leukopaks

Lonza has expanded its renowned human primary cell offerings with the launch of fully customizable, high-quality cryopreserved Leukopaks. The frozen Leukopaks will enable long-distance shipping of leukapheresis products without the concern of reduced cell viability encountered with fresh Leukopaks. Being suitable for long-term storage in research labs, the cryopreserved Leukopaks will also allow immediate access to viable cells for greater convenience and workflow flexibility.

The cryopreserved Leukopaks come in a range of sizes, and multiple donor characteristics and testing options are available through a unique costing structure that allows customers to only pay for the customization that they need.

What is a Leukopak?

A Leukopak is an enriched leukapheresis-derived product containing high concentrations of peripheral blood mononuclear cells like T cells, B cells and monocytes. Such cells are a critical raw material in immunotherapy research and for optimizing cell therapy process development before progressing to full clinical manufacture. However, fresh Leukopaks can be hard to access and must be used rapidly to avoid cell degradation. International transportation options are thus severely limited, and logistical delays or donor cancellations can have catastrophic impacts on research costs and quality.

Global shipping

Cryopreserved Leukopaks allow reliable global shipping while maintaining cell viability and functionality, and the ability to thaw cryopreserved Leukopaks when needed means researchers are better able to plan ahead for more cost-efficient therapy development.

Lonza’s cryopreserved Leukopaks are available in a range of sizes, including packs of 2.5, 5 and 9.5 billion cells, which can be subdivided into separate smaller bags for greater convenience. Specific donor characteristics like age, gender and Human Leukocyte Antigen (HLA) type are also available, with a wide range of recallable donors and several product testing options.


Customization follows a unique, tailored pricing structure, where customers only pay for the customization they require. Customers will also have access to Lonza’s globally renowned technical support services to facilitate optimized product usage and greater research success.