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?
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?