Portable device for monitoring a plurality of ketones and related method

A device comprising:

• a breath acetone measurement device that measures a breath acetone concentration of a user;
• a blood ketone body measurement device that measures at least one of a blood acetoacetate concentration and a blood β-HBA concentration of the user;
• and
• an output device that receives the breath acetone concentration measurement and the at least one of the blood acetoacetate concentration and the blood β-HBA concentration and presents information to the user relating to these concentration measurements, optionally but preferably simultaneously.

A method comprising:

• providing a portable device that comprises a first measurement device and a second measurement device different from the first measurement device;
• using the first measurement device to obtain a concentration measurement of a first ketone body in a user;
• using the second measurement device to obtain a concentration measurement of a second ketone body different from the first ketone body in the user;
• and
• using the device to output information relating to the first and second ketone body concentration measurements, optionally but preferably simultaneously.

A method comprising:

• providing a portable device that provides an output;
• using the portable device to obtain a breath acetone concentration measurement of a user;
• using the portable device to obtain a blood ketone body concentration measurement comprising at least one of an acetoacetate concentration and a β-HBA concentration of the user;
• communicating the breath acetone concentration measurement and the blood ketone body concentration measurement to the output device;
• and
• using the output device to provide information to the user.