We offer quality control services that include initial QC for library development, size selection, and final QC of customer prepared libraries that are ready to go for sequencing. Our scientists have years of experience analyzing libraries and troubleshooting issues. We use state-of-the-art equipment for quantification and sizing of DNA, from initial library input to finished library. Accurate QC ensures high quality libraries are run on the sequencers at the same concentration and helps identify adapter/primer dimers and unintended products that may cause sequencing issues to arise. We also offer automated size selection prior to or after library preparation, which allows for precise, discrete selection of DNA.
Fluorometric quantification of DNA is performed on two different platforms, depending on the number of samples submitted. All samples and prepared libraries must be quantified before continuing to sample sizing/quality.
Sample/prepared libraries higher than 50 ng/ul are diluted and re-run to ensure most accurate quantification.
Following quantification, DNA size, and integrity are evaluated to ensure the best results in customer library generation or sequencing. Evaluation is done via automated electrophoresis on one of the following platforms:
Each platform offers highly precise, analytical evaluation of various sample types and is capable of high-throughput processing.
High quality, pure DNA is necessary for samples submitted for Third-Generation Sequencing. In addition to the above metrics, QC of samples intended for Long Read Platforms includes a reading on the NanoDrop 1000. We measure the 260/230 and 260/280 ratios for contaminants, allowing us to provide information on the quality, troubleshoot and suggest possible improvements.
Solid Phase Reverse Immobilization (SPRI) purification is an option for customers whose libraries have an adapter/primer dimer and/or small, undesired fragments that may cause sequencing issues to arise. Libraries with ≥ 1% adapter dimer, by molarity, cannot be sequenced on the NovaSeq and libraries with ≥ 5% adapter dimer cannot be sequenced on the MiSeq. SPRI purification is performed using Axygen™ AxyPrep Mag™ PCR Clean-up beads (Corning Inc.). Following SPRI purification, QC is performed again to ensure effective purification.
We offer SPRI purification in situations where DNA purity is
compromised by organic compounds or other contaminants/inhibitors.
Additionally, for labs that do not have the ability to perform this, we offer SPRI purification, as the process is automatable and high-throughput.
We can perform size selection of DNA or prepared libraries on the PippinHT and BluePippin (Sage Science). These platforms provide medium-throughput size selection. PippinHT allows for precise size selection of up to 20 ul of sample/prepared Illumina libraries.
We MUST have this information before we can proceed with your request.
Please contact firstname.lastname@example.org to arrange all sample submissions. Samples and submission forms must be submitted before a project can be entered into our queue.
Submission Forms and Guidelines
Please check the service page guidelines for specific Submission Forms and Guidelines that need to be included with your samples.
Submitting Samples/ Shipping Instructions
After setting up a customer account, filling out submission form, and reviewing submission guidelines, you can now submit or send samples. *We require customers to submit electronic Submission Forms!*
In Person Submission
Please give advance notice of submission date and time so staff can be prepared to receive samples. Schedule a time for drop off with a staff member at email@example.com
Please send the tracking information to:
Next Generation Sequencing: firstname.lastname@example.org
*Samples that are being shipped must have a hard copy of the submission form and guidelines in the package! This way we know what the samples are and where they are from.*
If shipping samples from outside UWBC, ship via express shipping carrier on dry ice to the address below:
Illumina Submission Form (required with every submission) *Please note: Certain elements are not viewable on Mac Preview!
Guidelines and Sample Sheet (required with every submission)
Contact us at email@example.com with any questions.
See Illumina Sequencing Platform Policy (LINK)
All input DNA submitted after 9/12/19, along with any intermediate and/or derived products (to include undiluted stock libraries), will be stored for 6 months and then disposed of.
All customer prepared libraries submitted after 4/23/18 will be stored for 6 months and then disposed of.
EXTERNAL RATES: Clients not affiliated with UW Madison or the University of Wisconsin system are charged a 55% surcharge for all labor and incidentals provided; prices are as listed above. This surcharge is subject to change.
Illumina pricing is broken into two components: library preparation (or QC) and run cost. Library preparation is charged on a per sample basis and varies by type. Run charges are based on the length of the sequencing run and whether it is single or paired end. Prices are subject to change due to increasing reagent costs.