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Complete the lesson review. Put the steps of blood testing in order:

  • Perform a presumptive test to see if the substance could be blood.
  • Run additional test to determine if it is human or animal blood.
  • If the blood is human, run test to determine who the blood belongs to.
  • Perform a confirmatory test to eliminate any possibility of a false positive.


    • Answer: The steps for DNA analysis are:

    1. Perform a presumptive test to see if the substance could be blood.
    2. Perform a confirmatory test to eliminate any possibility of a false positive.
    3. Run additional test to determine if it is human or animal blood.
    4. If the blood is human, run test to determine who the blood belongs to.

 

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