Having the ability to determine within minutes whether a person has been exposed to harmful chemicals would be an important medical breakthrough, particularly in emergency situations. Typically, the most effective method for assessing exposure requires analysis of blood or urine. However, this often is time consuming and expensive.

Pacific Northwest National Laboratory researchers are developing a new monitoring technology structured around the collection and analysis of saliva samples. PNNL's non-invasive saliva monitoring approach, currently undergoing bench-scale laboratory testing, offers several new promising features. The technology is designed to be portable, highly reliable and quick in providing results. It would be cost-effective for home and workplace monitoring of trace metals and organics.

For example, exposures to high lead concentrations in aging homes are a critical health concern, particularly when children are exposed. Saliva concentrations have been shown to correlate with blood lead levels based upon analysis of a "spot" saliva specimen. This system also may be applicable to a broad range of drugs and environmental contaminants.

Contact: Andrea McMakin (509) 372-6013