The effect of superglue fuming with PolyCyano UV powder on touch DNA from fingerprints
OA Version
Citation
Abstract
One-step fluorescent cyanoacrylate fuming products like PolyCyano UV powder decrease the amount of time required to process latent fingerprints. The effects of these products on downstream DNA analysis are an important avenue of research to help determine which latent print processing method is right for specific case work. There is not a consensus on what, if any, effect PolyCyano UV has on the amount of DNA yield or the degradation of touch DNA samples. This study aimed to evaluate the effects of the PolyCyano UV on prints from four adjacent fingerprints from 30 donors deposited onto glass slides. The amount of small autosomal DNA, the percent increase or decrease in DNA yield, and the degradation index (DI) were measured across the donors using PCR. Three donor sets were taken through to profile to determine if peak heights were affected. There was no statistically significant difference in the amount of DNA yielded after PolyCyano UV fuming, nor the percent increase or decrease in DNA yield of those that did show a change in yield. The DIs of the samples fumed with PolyCyano UV were statistically lower than those samples left untreated. Two of the profiled donors had PolyCyano UV fumed samples with peak heights that were statistically greater than those that were not fumed. One of the profiled donors had the opposite.
Description
2025