We have compiled some links that are helpful for troubleshooting DNA sequencing reactions. If you don't find what you're looking for, please contact us. Our staff is happy to help.
Iowa State University - Troubleshooting Sanger Sequencing Results
University of Michigan- Interpretation of Sequencing Chromatograms
University of Michigan - What are the most common reasons for a sequencing reaction to fail?
University of Michigan- Primer Troubleshooting Guide
Nucleics, Inc. - DNA Troubleshooting Guide