A rapid and noninvasive method to detect dried saliva stains from human skin using fluorescent spectroscopy

2011

Detecting Dried Saliva Stains on Skin Using Fluorescent Spectroscopy

Sample size: 10 publication Evidence: moderate

Author Information

Author(s): Nanda Kanwar Deep Singh, Ranganathan K, Umadevi KM, Joshua Elizabeth

Primary Institution: Ragas Dental College, Chennai, Tamil Nadu, India

Can fluorescent spectroscopy effectively detect dried saliva on human skin?

Fluorescent spectroscopy is a rapid, sensitive, and noninvasive technique for detecting dried saliva stains on skin.

The emission spectrum of dried saliva was characterized at a primary peak of 345 to 355 nm.
Fluorescent spectroscopy allows for real-time measurement under physiological conditions.
The technique proved to be 100% effective in detecting saliva stains compared to other methods.

This study shows a way to find dried saliva on skin using special light, which can help in solving crimes.

Ten volunteers deposited saliva on their forearms, and the emission spectrum was recorded using fluorescent spectroscopy.

The study's sample size was small, which may limit the generalizability of the findings.

Ten volunteers from Chennai, Tamil Nadu, India.

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