DNA (deoxyribonucleic acid) is the basic building block of life. It exists in hair, tissue, blood, and bodily fluids. DNA is unique to an individual, meaning even the smallest sliver of a fingernail could help create an individual profile. The chances of two people having the same DNA is about one in a billion. That is to say: it is very unlikely. Utilizing DNA in investigations and cases is a huge technological leap; in fact, it didn’t exactly exist until the 1980’s. These days, DNA evidence is often a critical part of narrowing in on a suspect from a general population.
Luckily, DNA exists in a variety. Investigators can use almost any biological substance to gather DNA and pass it along to an analyzer who can create a profile from the sample. If investigators already have suspects in mind for their investigation, DNA can help confirm who they suspect by collecting samples.
Private investigators can collect blood, hair, saliva, and more from nearly any object. Hats, bed sheets, used dental floss, toothbrushes, and much more. Collecting samples from these objects can then be sent to an analyzer and can help investigators confirm things like affairs, or solve a paternity case.
It’s important to note as well that not every sample collected will contain enough DNA for substantial evidence. Sometimes samples simply do not contain enough information to create an individual profile. In this case, more samples will need to be collected, or DNA cannot be used as accurate evidence.
Even though DNA sampling and profiling was not really used until the mid-1980’s, it has come a long way since then. Collecting and analyzing DNA is accurate and efficient, thanks to the technological advances in science. With the help of investigators, laboratories, and analyzers, it has never been easier to incorporate DNA evidence into private investigations.