False Positives in Toxicology Testing

By Kevin Shanks, M.S., D-ABFT-FT We talk about false positives in forensic toxicology a lot. Could a specific drug cause a false positive for another drug on a toxicology test?   The answer is a bit complex, but it is both yes and no.  First, we need to talk about the...

Interferences in Toxicology Testing

By Kevin Shanks, D-ABFT-FT In toxicology testing, qualitative and quantitative testing are the norm, but every so often something prevents a result from being acquired. This “something” is called interference and will be displayed on the Axis Forensic Toxicology...

Pharmacodynamics

By Kevin Shanks, D-ABFT-FT Pharmacodynamics (PD) is the study of the effect of substances on the body.  The word is derived from Greek – Pharmakon and dynamikos which means “force” or “power”. PD includes concepts such as receptor affinity, receptor activity, and...