Matrix
Definition
The biological tissue or fluid (or non-biological substance) in which the analyte is suspended. The matrix decides extraction chemistry, recovery and the meaningful cut-off concentration.
Related terms
- Decontamination
- The wash protocol applied to hair or nails before extraction, intended to remove sweat, sebum and external contamination so that the assay...
- Femoral Blood
- Peripheral venous blood drawn from the femoral vein after clamping it off proximally. Considered the gold-standard antemortem-equivalent matrix because it is anatomically...
- Post-Mortem Redistribution (PMR)
- The phenomenon where drug and poison concentrations shift between body compartments after death, generally moving out of solid organs back into the...
- Viscera
- The standard set of organs and fluids collected at a suspected poisoning autopsy in India: stomach with contents, a length of upper...
- Vitreous Humour
- The gel-filled interior of the eye, anatomically isolated from hepatic and gastric post-mortem redistribution sources. In forensic toxicology of hooch deaths, vitreous...
Explained in
- Biological, Non-Biological and Viscera Matrices in ToxicologyThe biological tissue or fluid (or non-biological substance) in which the analyte is suspended. The matrix decides extraction chemistry, recovery and the meani...