Devices and formulations for detecting, screening and monitoring levels of certain constituents in bodily fluids and method

A method for use in the conduct of a non-invasive analysis of a bodily fluid to determine the presence and the level of a certain constituent carried by the bodily fluid, in which analysis a sample of the bodily fluid is exposed to an indicator formulation capable of changing color in response to exposure to the certain constituent provides a visible indication of the presence and the level of the certain constituent carried by the bodily fluid, the method comprising:

• providing a vessel having a receptacle for receiving the sample of the bodily fluid;
• providing a receptor construct within the vessel in juxtaposition with the receptacle;
• providing a stabilizer formulation carried by the receptor construct in position to be exposed to the sample of the bodily fluid upon introduction of the sample into the receptacle;
• the stabilizer formulation consisting essentially of:
• a first component for promoting formation of a film;
• a second component for adjusting the pH of the sample and inhibiting microbial digestion of the certain constituent carried by the bodily fluid;
• and
• a third component for reducing interference of ascorbic acid present in the bodily fluid;
• introducing the sample into the receptacle of the vessel prior to exposure of the sample to the indicator formulation;
• and
• mixing the sample with the stabilizer formulation retained upon the receptor construct to prepare a mixture of the sample and the stabilizer formulation prior to exposure of the mixture to the indicator formulation and subsequent conduct of the non-invasive analysis.