- Course Introduction
- 01: Evidence & DNA
- 02: Forensic Biology
- 03: DNA Extraction & Quantitation
- 04: DNA Amplification
- 05: Amplified DNA Product Separation
- 06: STR Data Analysis & Interpretation
- Data Troubleshooting
- Data Interpretation & Allele Calls
President's DNA Initiative
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Advancing Justice Through DNA Technology
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Advancing Justice Through DNA Technology
DNA Analyst Training
Known Extraction Control(s)
Home > STR Data Analysis & Interpretation > Data Interpretation and Allele Calls > Step 1: Internal Size Standards and Allelic Ladders > Known Extraction Control(s)
Many laboratories include known extraction controls in the analysis process. These controls aid in determining the overall performance of the entire process from extraction through typing.
The known extraction control should show the expected alleles. If no peaks are seen, this may indicate a problem with the amplification or injection. In the event that the known extraction control does not yield the correct results, analysts should troubleshoot the problem and follow the procedures established by the laboratory.
Note: |
It is expected that injection issues would have been identified in the internal size standard evaluation step. |
