President's DNA Initiative

STR Data Analysis and Interpretation for Forensic Analysts

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  • STR Data Analysis and Interpretation Software
    • Objectives
    • Overview
    • GeneScan®
      • Analysis Parameters
      • Size Calling Methods
      • Smoothing
    • Genotyper®
    • GeneMapper® ID v3.2
      • Features and Procedures: Yfiler Kit
      • Analysis Modes
    • FMBIO Analysis Software
    • FMBIO® Starcall™
  • Data Troubleshooting
    • Objectives
    • Data Interpretation and Troubleshooting
    • Thresholds
    • Spurious Peaks
      • Dye Blobs
      • Spikes
      • Noise
    • Pull-up
    • Stutter
      • Non-Template Addition
    • Microvariants and OL Alleles
    • Degradation
    • Stochastic Effects
    • Allele Dropout
    • Mutations
      • Mutation & Paternity
      • Null Alleles
    • Controls
  • Data Interpretation & Allele Calls
    • Objectives
    • Overview
    • Step 1: Internal Size Standards and Allelic Ladders
      • Controls
      • Positive Control(s)
      • Known Extraction Control(s)
      • Negative Control(s) & Reagent Blanks
      • Substrate Controls
    • Step 2: Extraneous Peaks
    • Step 3: Data Evaluation
    • Single Source Profiles
    • Mixtures
      • Mixtures with Major/Minor Contributors
      • Mixtures with Known Contributor(s)
      • Mixtures with Indistinguishable Contributor(s)
    • Example of Percent Contribution
      • Two Person Mixture with Three Alleles at a Locus
      • Two Person Mixture with Two Alleles at a Locus
    • Reporting Guidelines
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