Recent advances in technology resulting in high sensitivity testing continue to enable the detection of ever smaller trace concentrations of medications.

Furthermore, the effort needed to implement zero-risk laws grew as technological advances enabled the detection of smaller quantities of hazardous substances.

The olfactory receptors are located on cell surfaces in the nose which bind to chemicals enabling the detection of smells.

Tracking enables the detection of rare, endangered, and elusive species.

Using this same drop of blood, tandem mass spectrometry enables the detection of at least four times the number of disorders than was possible with previous technologies.