(Received 7 October 1981; accepted 10 November 1981)
Published Online: July
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Dried bloodstains on cotton sheeting ranging in age from three days to three months were exposed to the argon ion laser for durations from 30 s to 3 main. The bloodstains showed greatly reduced reactions or none at all with presumptive reagents applied by fine mist spraying. Filter paper rubs of the same stains followed by presumptive testing yielded the appropriate oxidation reactions of the indicator reagents.
Florida Department of Law Enforcement, Jackonsville Regional Crime Laboratory, Jacksonville, FL
Stock #: JFS12183J