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Principles of Forensic DNA for Officers of the Court

Controlling Quality

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Image of a 3 ring binder with the words Quality Control Manual on the cover
National Institute of Justice (NIJ) (see reuse policy).

Quality control (QC) consists of the operational techniques and activities that are used to fulfill requirements for a successful quality assurance program. Typical QC activities include:

  • Regular testing of new chemicals with known samples prior to use on casework to confirm chemical is working properly and free of human DNA
  • Regular use of certified reference materials and/or internal quality control using secondary reference materials
  • Participation in inter-laboratory comparison or proficiency testing programs

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