Introduction to Sweat and Its Forensic Analysis

Sweat analysis in forensic science is an important aspect in the field where the results obtained can be used to determine the presence of toxic substances in the body such as drugs, metals, toxins, etc. Advanced analysis of this bio-fluid can also help us determine the number of persons present in the scene of crime due to the determination of the composition of constituents present in the sweat. The most important advantage of sweat evidence is that because of having unique feature, it can help in distinguishing individuals easily. This is possible due to the fact that sweat contains a large number of metabolites and amino acids that can be detected on the surface, which tend to fluctuate over time due to the change in lifestyle. Because of this reason, sweat stains have become important biological evidence in cases like kidnapping, rape cases, and molestation which can be found in the clothes, on the carpet, used handkerchiefs, or on the victim’s/suspect’s body, etc. at various crime scenes.