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Questioning the Validity of Forensic DNA Match Statistic
Fifteen years of criminal cases with affected mixture evidence.
Study Raises Questions About DNA Evidence
University of Indianapolis researchers say contamination through secondary transfer of material could implicate the innocent or help the guilty go free.
'Forensic Toolkit’ to Improve Evidence Detection and Analysis
Students from The University of Dundee have been developing a forensic `toolkit’ that will allow investigators to determine the age of fingerprints, detect traces of steel on bone from stabbings, and produce a biosensitive spray that can reveal traces of bodily fluids at crime scenes.
Glowing Fingerprints to Fight Crime
A CSIRO scientist who had his home broken into has developed a new crime scene identification technique to help fingerprint criminals.
Forensic Facial Examiners Can Be Near Perfect
In what might be the first face-off of its kind, trained forensics examiners from the FBI and law enforcement agencies worldwide were far more accurate in identifying faces in photographs than nonexperts and even computers.
Ancestral Background Can Be Determined By Fingerprints
A proof-of-concept study finds that it is possible to identify an individual’s ancestral background based on his or her fingerprint characteristics – a discovery with significant applications for law enforcement and anthropological research.
CSI -- On The Metabolite's Trail
Bioinformaticians at the University of Jena make the most efficient search engine for molecular structures available online.
People Emit Their Own Personal Microbial Cloud
We each give off millions of bacteria from our human microbiome to the air around us every day, and that cloud of bacteria can be traced back to an individual.
Blood, Teeth Samples Predict a Criminal's Age
Forensic biomedical scientists from KU Leuven have developed a test to predict individuals’ age on the basis of blood or teeth samples. This test may be particularly useful for the police, as it can help track down criminals or identify human remains.
Contactless Fingerprint Technology is Coming
Quickly moving through security checkpoints by showing your hand to a scanner seems straight out of science fiction, but NIST is working with industry to bring fast, touchless fingerprint readers out of the lab and into the marketplace.
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Automated Solid Phase Extraction of THC and Metabolites from Whole Blood using the Gilson GX-274 ASPEC™
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Tetrahydrocannabinol (THC) is the principle active component in marijuana. It is rapidly absorbed by inhalation and also through the gastrointestinal tract. Being stored in the fat tissue of the body, it is released over a long period of time. THC is metabolized into two main analytes: 11‐OH‐THC (11‐hydroxy‐THC) and 11‐Nor‐9‐carboxy‐THC (THC‐COOH).
Positive identification of tetrahydrocannabinol is commonly performed through screening tests using a urine sample, with confirmatory tests performed using mostly urine and blood samples. Urine analysis does have a false positive problem with a known drug Protonix™ which is used to treat gastroesophageal reflux disease (GERD). 4 Blood testing is commonly performed to detect the recent use of THC, and therefore is commonly used to investigate accidents and suspicion of driving under the influence (DUI) because blood testing can provide an indication of whether the subject was actually under the influence. Studies have shown that high THC blood levels are correlated with impaired driving.

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