Forensic Determination of Sildenafil and Vardenafil in Seized Evidence
A plastic-wrapped bundle of herbs packaged and sent halfway around the world. A cardboard box filled with blister-packaged counterfeit tablets. A bag of coffee. One-half tablet, either cut or bitten. A single open capsule with only a residue of powder remaining. These are just a few of the samples that have been seized by law enforcement agencies, analyzed by forensic chemists and identified as containing illegally-distributed sildenafil, the active ingredient in Viagra.
A plastic-wrapped bundle of herbs packaged and sent halfway around the world. A cardboard box filled with blister-packaged counterfeit tablets. A bag of coffee. One-half tablet, either cut or bitten. A single open capsule with only a residue of powder remaining. These are just a few of the samples that have been seized by law enforcement agencies, analyzed by forensic chemists and identified as containing illegally-distributed sildenafil, the active ingredient in Viagra.
LCGC Blog: Forensics Laboratories Underassess Uncertainty in Blood Alcohol Determinations
August 8th 2023The level of uncertainty provided by most forensic laboratories for reported blood alcohol results has been woefully underassessed. Not only is this bad science, but someone’s civil liberties may be at stake.
Ink Source Prediction and Assessment Made Possible by Mass Spectrometry
May 22nd 2023Scientists have developed a new method for predicting and assessing the source of black inks using direct analysis in real-time mass spectrometry. By applying dimensionality reduction techniques and likelihood ratio analysis, the researchers achieved high accuracy in identifying ink sources, demonstrating the potential of this approach in forensic ink analysis.
The LCGC Blog: Forensics Laboratories Underassess Uncertainty in Blood Alcohol Determinations
May 2nd 2023The level of uncertainty provided by most forensic laboratories for reported blood alcohol results has been woefully underassessed. Not only is this bad science, but someone’s civil liberties may be at stake.
