Physiological measurement using wearable device

1. A method, comprising:

measuring, by a wearable device being worn on an external surface of a body of a user proximate a portion of subsurface vasculature, one or more physiological parameters during one or more measurement periods to develop a baseline profile of the user, wherein the one or more physiological parameters are measured by:

directing, from a magnet in the wearable device, a magnetic field into the portion of subsurface vasculature, wherein the magnetic field causes functionalized magnetic particles that have been introduced into the body to collect in a lumen of the portion of subsurface vasculature;

directing, from a signal source in the wearable device, an interrogating signal into the portion of subsurface vasculature; and

detecting, by a detector in the wearable device, a response signal transmitted from the portion of subsurface vasculature in response to the interrogating signal, wherein the response signal is indicative of binding of one or more analytes to the functionalized magnetic particles collected in the lumen of the subsurface vasculature by the magnetic field;

measuring, using the magnet, signal source, and detector in the wearable device, the one or more physiological parameters during one or more additional measurement periods to obtain additional data; and

providing, by the wearable device, an output based on the additional data deviating from the baseline profile.

2. The method of claim 1 , wherein the output is provided via a user interface of the wearable device.

3. The method of claim 2 , wherein the output comprises at least one of a visual component, an auditory component, or a tactile component.

4. The method of claim 3 , wherein the output indicates one or more recommendation for the user.

5. The method of claim 4 , wherein the one or more recommendations comprise at least one of a recommendation that the user take a particular medication, a recommendation that the user schedule an appointment with a medical professional, a recommendation that the user seek immediate medical attention, or a recommendation that the user abstain from an activity.

6. The method of claim 4 , further comprising:

transmitting, by the wearable device to a server, data indicative of the one or more physiological parameters measured during the one or more measurement periods; and

transmitting, by the wearable device to the server, data indicative of the one or more physiological parameters measured during the one or more additional measurement periods.

7. The method of claim 6 , further comprising:

receiving, by the wearable device from the server, the one or more recommendations.

8. A wearable device, comprising:

a magnet;

a signal source;

a detector;

a processor;

a user interface; and

a non-transitory computer-readable medium having stored therein instructions that are executable by the processor to cause the wearable to perform functions comprising:

measuring one or more physiological parameters of a user of the wearable device during one or more measurement periods to develop a baseline profile of the user, wherein the wearable device is worn on an external body surface of the user proximate a portion of subsurface vasculature, wherein the one or more physiological parameters are measured by:

directing, from the magnet, a magnetic field into the portion of subsurface vasculature, wherein the magnetic field causes functionalized magnetic particles that have been introduced into the body to collect in a lumen of the portion of sub surface vasculature;

directing, from the signal source, an interrogating signal into the portion of subsurface vasculature; and

detecting, by the detector, a response signal transmitted from the portion of subsurface vasculature in response to the interrogating signal, wherein the response signal is indicative of binding of one or more analytes to the functionalized magnetic particles collected in the lumen of the subsurface vasculature by the magnetic field;

measuring, using the magnet, signal source, and detector, the one or more physiological parameters during one or more additional measurement periods to obtain additional data; and

providing an output based on the additional data deviating from the baseline profile.

9. The wearable device of claim 8 , wherein the output is provided via the user interface.

10. The wearable device of claim 9 , wherein the output comprises at least one of a visual component, an auditory component, or a tactile component.

11. The wearable device of claim 10 , wherein the output indicates one or more recommendations for the user.

12. The wearable device of claim 11 , wherein the one or more recommendations comprise at least one of a recommendation that the user take a particular medication, a recommendation that the user schedule an appointment with a medical professional, a recommendation that the user seek immediate medical attention, or a recommendation that the user abstain from an activity.

13. The wearable device of claim 11 , wherein the wearable device further comprises a communication interface, and wherein the functions further comprise:

transmitting, via the communication interface and to a server, data indicative of the one or more physiological parameters measured during the one or more measurement periods; and

transmitting, via the communication interface and to the server, data indicative of the one or more physiological parameters measured during the one or more additional measurement periods.

14. The wearable device of claim 13 , wherein the functions further comprise:

receiving, via the communication interface and from the server, the one or more recommendations.

15. A non-transitory computer readable medium having stored therein instructions that are executable by a processor in a wearable device to cause the wearable device to perform functions comprising:

measuring, by the wearable device, one or more physiological parameters of a user of the wearable device during one or more measurement periods to develop a baseline profile of the user, wherein the wearable device is worn on an external body surface of the user proximate a portion of subsurface vasculature, wherein the one or more physiological parameters are measured by:

directing, from a magnet in the wearable device, a magnetic field into the portion of subsurface vasculature, wherein the magnetic field causes functionalized magnetic particles that have been introduced into the body to collect in a lumen of the portion of sub surface vasculature;

directing, from a signal source in the wearable device, an interrogating signal into the portion of subsurface vasculature; and

detecting, by a detector in the wearable device, a response signal transmitted from the portion of subsurface vasculature in response to the interrogating signal, wherein the response signal is indicative of binding of one or more analytes to the functionalized magnetic particles collected in the lumen of the subsurface vasculature by the magnetic field;

measuring, using the magnet, signal source, and detector in the wearable device, the one or more physiological parameters during one or more additional measurement periods to obtain additional data; and

providing an output based on the additional data deviating from the baseline profile.

16. The non-transitory computer readable medium of claim 15 , wherein the output is provided via a user interface of the wearable device.

17. The non-transitory computer readable medium of claim 16 , wherein the output comprises at least one of a visual component, an auditory component, or a tactile component.

18. The non-transitory computer readable medium of claim 17 , wherein the output comprises one or more recommendations for the user.

19. The non-transitory computer readable medium of claim 18 , wherein the one or more recommendations comprise at least one of a recommendation that the user take a particular medication, a recommendation that the user schedule an appointment with a medical professional, a recommendation that the user seek immediate medical attention, or a recommendation that the user abstain from an activity.

20. The non-transitory computer readable medium of claim 18 , wherein the wearable device comprises a communication interface, wherein the functions further comprise:

transmitting, via the communication interface and to a server, data indicative of the one or more physiological parameters measured during the one or more measurement periods; and

transmitting, via the communication interface and to the server, data indicative of the one or more physiological parameters measured during the one or more additional measurement periods; and

receiving, via the communication interface and from the server, the one or more recommendations.