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  • /content/site/us/en/home/Products-and-Services/Applications/PCR/real-time-pcr/qpcr-education/real-time-pcr-troubleshooting-tool/snp-genotyping-troubleshooting/trailing-clusters
SNP Genotyping Troubleshooting
  • SNP Not Amplifying
  • Trailing Clusters
    • Your DNA may be degraded
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    • You may not have designated ROX™ dye as the reference dye
  • Diffuse Clusters
  • SNP Analysis: No Autocalling
  • Normal Allelic Discrimination Plot

Trailing Clusters

Trailing Clusters in SNP Analysis

Trailing clusters

If you are observing trailing clusters in your SNP analysis, then it is likely you have one these problems (select one):

  • Your DNA may be degraded
  • Your DNA may not be accurately quantitated
  • There may be PCR inhibitors present in your sample
  • Your reagents may have been mishandled or may be expired
  • You may not have ROX™ dye in your master mix
  • There may be evaporation from the reaction well
  • You may be experiencing pipetting errors
  • Your samples may not be mixed or centrifuged properly
  • Your real-time PCR instrument may not be correctly calibrated
  • You may not have designated ROX™ dye as the reference dye
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