![]() It simply collects more DNA material and is a better representation of what is on the evidence.ħ - How does the M-Vac ® help with low quant samples ? Why does that help? There have been a number of cases where traditional methods, like swabbing, have yielded inconclusive mixtures and subsequent M-Vac ® collections have resulted in conclusive major/minor profiles that helped move the case forward. The M-Vac ® unit's advantage is it collects more of what is there. ![]() If a piece of evidence has a mixture of low-level DNA on it and a swab were to be used, it would often yield an inconclusive partial mixture. Each method has advantages and disadvantages that need to be considered with each piece of evidence.Ħ - Will the M-Vac ® lead to inconclusive mixtures? All of the methods simply collect from the evidence using their collection mechanism. The tip of the swab is not sorting out which cells to collect. No method only collects the DNA material that is pertinent to the case. It simply collects more of what is there. It gives a case a second chance!ĥ - Since the M-Vac ® is so proficient at collecting DNA material, won't it collect DNA that is not pertinent to the case? Especially if the traditional method yielded an inconclusive or partial profile. ![]() It can result in a conclusive profile after traditional methods have been used. The M-Vac ® is a valuable tool in that scenario. It simply collects the cells from the collection surface.Ĥ - What if traditional collection methods have already been used on an item? The M-Vac ® system collects epithelial cells ( touch, saliva & urine), blood and seminal fluid (sperm). A number of agencies are finding success where before there was little hope in generating a DNA profile.ģ - What biological materials can be collected? ![]() The M-Vac ® System's ability to collect from the top surface and in the cracks and crevices of the evidence helps retrieve trace amounts of DNA material. When compared to swabbing or taping, it consistently collects more DNA material. Touch DNA, contact DNA or DNA material (usually epithelial cells) that has been deposited by the perpetrator by grabbing, touching or pressing up against an object, is an area where the M-Vac ® System works well.
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