Patent ID: 7364551

Claim:
A hand-held medical apparatus comprising: a. a housing; b. an inlet for receiving a sample of user breath; c. a sensor for detecting acetone in said user breath using a biomolecule and producing a breath-component signal over a measurement time; d. a sensing electrical circuit in electrical communication with said sensor for sensing said breath-component signal, wherein the magnitude of said breath-component signal is a function of the concentration of said acetone in said breath sample to be received into said inlet; e. an analog to digital converter in electrical communication with said sensing electrical circuit for converting said breath-component signal to a digital signal; f. a microprocessor for processing said digital signal into at least one of a data signal and a user fat metabolism indicator; and g. a display in electrical communication with said microprocessor for displaying said at least one of a data signal and a user fat metabolism indicator.