Forensic Drug Identification by Gas Chromatography- Infrared Spectroscopy . Award Number: 2008-DN-BX-K161 . Robert Shipman, Trisha Conti, PhD, Tara Tighe, MS and Eric Buel, PhD . ABSTRACT . The primary goal of the forensic drug examiner is the unequivocal identification of any controlled substance present in a drug exhibit. Most forensic laboratories routinely employ Gas Chromatography/ Mass Spectrometry (GC/MS) as the preferred method for this examination.
Vasodepressor syncope is a common medical problem that can usually be diagnosed through an accurate history and upright tilt testing. In most cases, long-term therapy is not necessary, and the majority of patients experience a striking decrease in syncopal episodes following a tilt test and the ensuing reassuring explanation from their physician.
Why Does Syncope Occur? Syncope occurs when the blood flow to the brain becomes markedly reduced, for as few as five or six seconds. The brain's blood flow can be interrupted for a number of different reasons. Fortunately, in most cases, syncope is a transient condition that is not caused by a serious medical problem.