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Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

What is the workflow for xGen™ DNA Library Prep Kit MC library construction?

The xGen DNA Library Prep Kit MC protocol contains three enzymatic incubations and two bead-purification steps, thereby minimizing sample handling and overall library preparation time to under two hours.

  • The first incubation consists of end repair, polishing, and dA-tailing, all performed in a single End Prep reaction.
  • The second incubation performs ligation of either full-length indexed Y adapters, or stubby Y adapters and a bead-purification step.
  • The third incubation is PCR amplification which completes the indexed adapters (when ligating stubby Y adapters) for increased library yield, followed by a second bead-based clean-up.


*RUO—For research use only. Not for use in diagnostic procedures. Unless otherwise agreed to in writing, IDT does not intend for these products to be used in clinical applications and does not warrant their fitness or suitability for any clinical diagnostic use. Purchaser is solely responsible for all decisions regarding the use of these products and any associated regulatory or legal obligations.