Patent ID: 7241627

Claim:
A wearable article equipped with a multi-level alert system for detecting two or more levels of a mammalian substance in a mammalian extract, the wearable article comprising: a substrate; a target area on the substrate including first and second sub-areas for receiving the mammalian extract; and a chemical detection system on the target area for detecting at least a first lower level of the mammalian substance in the first sub-area and a second higher level of the mammalian substance in the second sub-area; wherein the chemical detection system comprises a first chemical composition on the first sub-area and a second chemical composition on the second sub-area, the first chemical composition detects the first lower level of the mammalian substance and the second chemical composition detects the second higher level of the mammalian substance; and the mammalian substance being detected is not a hydrogen ion or ion aggregate.