Apparatus for automated glucose tolerance testing

A system comprising:

• a first needle;
• a first injector, wherein the first injector is coupled to the first needle;
• a first sensor;
• a second needle;
• a second injector, wherein the first injector is coupled to the first needle;
• a second sensor;
• a user interface;
• and
• a controller, wherein the controller is programmed to perform operations comprising:
• during a first period of time, operating the first injector to drive the first needle into skin to form a puncture in the skin such that a first amount of blood is received by the first sensor;
• operating the first sensor to detect an amount of an analyte in the first amount of blood
• receiving a user input via the user interface;
• responsive to receiving the user input, during a second period of time that is subsequent to the first period of time and that is subsequent to receiving the user input by a first delay period, operating the second injector to drive the second needle into the skin to form a further puncture in the skin such that a second amount of blood is received by the second sensor;
• and
• operating the second sensor to detect an amount of the analyte in the second amount of blood.

A method comprising:

• during a first period of time, operating a user interface of a device to prompt a user to self-administer a dose of a substance;
• during a second period of time that is subsequent to the first period of time by a first delay period relative to the first period of time, operating a first injector of the device to drive a first needle into skin to form a puncture in the skin such that a first amount of blood is received by a first sensor of the device, wherein the first injector is coupled to the first needle;
• operating the first sensor to detect an amount of an analyte in the first amount of blood;
• during a third period of time that is subsequent to the second period of time and that is subsequent to the first period of time by a second delay period relative to the first period of time, operating a second injector of the device to drive a second needle into the skin to form a further puncture in the skin such that a second amount of blood is received by a second sensor of the device, wherein the second injector is coupled to the second needle;
• and
• operating the second sensor to detect an amount of the analyte in the second amount of blood.

A method comprising:

• during a first period of time, operating a first injector of a device to drive a first needle into skin to form a puncture in the skin such that a first amount of blood is received by a first sensor of the device, wherein the first injector is coupled to the first needle;
• operating the first sensor to detect an amount of an analyte in the first amount of blood;
• receiving a user input via a user interface of the device;
• responsive to receiving the user input, during a second period of time that is subsequent to the first period of time and that is subsequent to receiving the user input by a first delay period, operating a second injector of the device to drive a second needle into the skin to form a further puncture in the skin such that a second amount of blood is received by a second sensor of the device, wherein the second injector is coupled to the second needle;
• and
• operating the second sensor to detect an amount of the analyte in the second amount of blood.