1 analysis of body fluids for forensic purposes: from laboratory testing to non-destructive rapid...

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Analysis of body fluids for forensic purposes: From laboratory testingto non-destructive rapid confirmatory identification at a crime scene

; Kelly Virkler, Igor K. Lednev, United States

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• Composition of each body fluid

• Summary of techniques

• Discussion of new method

• Introduction of techniques based on fluorescence and Raman spectoscopy

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The most common body fluids found at crime scenes.•Blood

•Semen

•Saliva

•Vaginal fluid

•Urine

•Sweat

****DNA evidence

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The main problem• Test is destruction of the sample.

• Smallest amount of biological evidence.

• Quantities.

• Preservation of DNA evidence.

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BLOOD

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Summary of all cur rent or older tests.

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SEMEN

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Summary of all cur rent or older tests.

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SALIVA

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Summary of all cur rent or older tests.

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VAGINAL FLUID

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Summary of all cur rent or older tests.

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URINE

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Summary of all cur rent or older tests.

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SWEAT

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Summary of all cur rent or older tests.

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Non-destructive confirmatory

identification of body fluids.

• Fluorescene spectoscopy

• Raman spectoscopy

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semen

Skin oil

saliva

urine

blood

Handheld fluorescence

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•Raman spectoscopy

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Special thank

Thongchai Tachowisan

(Advisor)

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Thank for your attention.