Library Construction

Library preparation services are offered by the DNA Core. Staff are experienced in constructing libraries from total RNA, enriched small RNA, enriched mRNA, immuno-precipitated DNA(ChIP-Seq), amplicons, and genomic DNA with more than 1,000 libraries prepared in-house annually. Non-standard library construction requests will be considered and accepted on an individual basis.


Researchers may submit libraries prepared in their own labs. The DNA Core recommends researchers discuss with core staff the preparation of libraries to ensure successful sequencing. Researcher prepared libraries have a typical turn-around time of 2-4 weeks.

Library Construction Fees

.....Service Description.... USD Unit
Total RNA Analysis Fee $7 Sample
NGS Fragment Analysis Fee (HS) $7 Sample
Qubit Quantitation Fee $3.50 Sample
Covaris Shearing $10 Sample
Genomic Library Preparation (TruSeq PCR-free) $200 Sample
ChIP-Seq Library Preparation (NEB Ultra DNA) $180 Sample
RNA-Seq Library Preparation (TruSeq mRNA Stranded) $200 Sample
Small RNA Library Preparation $240 Sample
RNA-Seq Library Preparation(rRNA depletion) *bacterial $275 Sample
Ultra Low RNA Library Preparation (Clonetech) $375 Sample
WGBS Library Preparation (NEB) $220 Sample
Methylated DNA Enrichment Library Preparation (NEB) $220 Sample
16S Sequencing (V4 amplicon) Contact DNA Core



The Illumina sequencing platform has the capability to pool samples in a single lane to reduce the cost of sequencing. Sample pooling, or multiplexing, is accomplished with a barcode sequence incorporated in to each fragment during library construction that is used to sort reads post-run (see table below). The DNA Core currently supports the Illumina indexing system for core prepared libraries. The Illumina indexing system allows the pooling of up to 24 samples per lane for RNA-Seq and genomic libraries, and 48 samples for small RNA libraries. Alternate indexing approaches are available to researchers requiring higher multiplexing capabilities. Consult with the DNA Core if you are considering a multiplexing approach which does not use Illumina indexing.