Illumina library prep kits and associated index kits

To offer flexibility to customers, Illumina offers library preparation and index kits in a decoupled format, meaning that the index kits are sold separately from the library preparation kits. This format is intended to offer a range of indexing possibilities. This bulletin lists the library preparation kits which have multiple indexing strategies, and the recommended index kits. This will help customers choose the right index kit option suitable for their project.
In May 2020, Illumina announced changes to some of the IDT for Illumina indexes; the new names and catalog numbers are provided in this bulletin.
Library preparation kits that have not been decoupled are not listed in this bulletin.
For more information on each index kit please refer to the Illumina adapter portfolio support bulletin.
For any feedback or questions regarding this article (Illumina Knowledge Article #3276), contact Illumina Technical Support [email protected].
© 2023 Illumina, Inc. All rights reserved. All trademarks are the property of Illumina, Inc. or their respective owners. For specific trademark information, please visit