The luminol test remains popular due to the lack of false
positives and false negatives in comparison with other screening
tests as well as the fact that luminol is not as hazardous as other
reagents [26]. However, it is limited to use in dark environments
[14]. A similar, less popular fluorescence technique involving
fluorescein depends on heme accelerating the oxidation of
fluorescin to fluorescein in hydrogen peroxide [8,9]. Studies have
shown that it is just as effective as luminol as a presumptive test for
blood and also will not damage potential DNA evidence