“…Although some kits were quite old (30 years), DNA does not significantly degrade from the passage of time (Butler, 2005), 2 but rather from contamination-for example, exposure to ionizing radiation (Sutherland, Bennett, Sidorkina, & Laval, 2000), UV light (Cadet, Sage, & Douki, 2005), or formalin (Tang, 2006)-or from exposure to extreme heat (i.e., >266 °F; Karni, Zidon, Polak, Zalevsky, & Shefi, 2013) or humidity (i.e., 100% humidity; Lund & Dissing, 2004). The state police review concluded that the SAKs had not been exposed to extreme conditions, nor had they been opened for possible contamination of the samples (see Campbell, Fehler-Cabral et al, 2015). Therefore, it is unlikely that there was significant degradation of the samples, despite the age of some kits.…”