The tampered blood found behind a gate and the socks were all tested and compared to the blood from the tube containing EDTA. All three methods proved that the blood had not been planted by a police officer and that the EDTA level was not very high, so the police had absolutely nothing to do with the found blood. The method used to conclude the result was LC-MS/MS. References: 1) PROVE THE CASE: DNA EVIDENCE IN THE OJ SIMPSON CASE. (n.d.). Retrieved October 9, 2014, from http://phobos.ramapo.edu/~jweiss/laws131/unit3/simpson.htm2) USDOJ/OIG FBI Labs Report. (n.d.). Retrieved October 11, 2014, from www.justice.gov/oig/special/9704a/07simpso.htm 3) Uses, Side Effects, Interactions, and Warnings - WebMD. (n.d.). Retrieved October 9, 2014, from http://www.webmd.com/vitamins-supplements/ingredientmono-1032-edta.aspx?activeingredientid=1032&activeingredientname=edta4) Miller, M., Mccord, B., Martz, R., & Budowle, B. (1997). The analysis of EDTA in dried blood spots by electrospray LC-MS-MS and ion chromatography. Journal of Analytical Toxicology,