A CSI lab tech has just completed as series of Kastle-Meyer tests on several red stains on a suspect’s shirt.  In all cases after hydrogen peroxide is added, a pink color appears 5-10 min later.  Please answer the following questions:

A) What is the result?  

B) Why?  

C) What would also need to be done to ensure that the test and procedure are being done correctly and the results are reliable?  Why might a defense attorney ask if a positive and negative control had been done properly?

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