Marker monitoring via a medical device

A method comprising:

• receiving, by processing circuitry, information corresponding to a medication;
• receiving, by the processing circuitry from a light detector of a medical device, information indicative of a fluoresced signal from a fluorescent marker of a patient;
• determining, by the processing circuitry based on the information corresponding to the medication, a medication level corresponding to the patient;
• determining, by the processing circuitry, a characteristic of the fluorescent marker based on an emitted signal and the fluoresced signal, wherein the characteristic of the fluorescent marker is indicative of at least one of a presence of a compound in the patient or a physiological function of the patient, and wherein a light emitter of the medical device emits the emitted signal, causing the fluorescent marker to emit the fluoresced signal;
• and
• determining, by the processing circuitry, the patient's compliance in taking the medication based on the characteristic of the fluorescent marker and based on the medication level.

A non-transitory computer-readable medium comprising instructions for causing one or more processors to:

• receive information corresponding to a medication;
• receive, from a light detector of a medical device, information indicative of a fluoresced signal from a fluorescent marker of a patient;
• determine, based on the information corresponding to the medication, a medication level corresponding to the patient;
• determine a characteristic of the fluorescent marker based on an emitted signal and the fluoresced signal, wherein the characteristic of the fluorescent marker is indicative of at least one of a presence of a compound in the patient or a physiological function of the patient, and wherein a light emitter of the medical device emits the emitted signal, causing the fluorescent marker to emit the fluoresced signal;
• and
• determine the patient's compliance in taking the medication based on the characteristic of the fluorescent marker and based on the medication level.