Proof of concept: Pilot Study A Pilot, proof of concept, observational study with a long-term goal to develop a minimally invasive wearable Remote Medication Monitor (RMM) that provides continuous, real-time data on methadone levels in interstitial fluid (ISF). An RMM could be used as a medication adherence monitor and would allow for the physician, counselor, patient, or family member to remotely verify that a physician-prescribed dose has been taken.
The investigator will conduct a non-randomized, non-blinded, feasibility study at a single center in the United States. The study will include up to 20 subjects of an equal number of male and female adults (ages 18-70) who have a prescription for methadone. In Aim 1, the investigators will determine if an RMM can continuously assess the status of taking a prescribed dose of methadone over time, by inserting the dermal ISF sensing elements into the subjects' abdominal skin. Biosample collections (i.e., ISF, blood) and pharmacokinetic monitoring will occur over a 6-hour period. By completing this aim, the investigator will determine if a physician is able to recognize the pharmacokinetic profile of a taken dose of methadone. The physician will see a dosing curve display generated from dermal ISF dialysis fluid sampling using an external fiberoptic sensor system that is worn continuously on the abdomen similar to continuous glucose monitors.
Study Type
OBSERVATIONAL
Enrollment
30
Measurement of Methadone and its metabolites in interstitial fluid with Liquid Chromatography - Mass Spectroscopy (LC-MS) and Aptamer based Assay
Measurement of Methadone and its metabolites in ISF with LC-MS and RMM
Up to 15 minute periods of continuous ISF collection for analysis
Synergy
Lemon Grove, California, United States
Methadone Concentration in ISF before and after a dose
measure dermal interstitial fluid with LC-MS for methadone before and after a daily dose
Time frame: 1 day
Methadone Concentration in blood before and after a dose
measure blood for methadone with LC-MS before and after a daily dose
Time frame: 1 day
Concentration of Methadone in ISF with LC-MS versus Fluorescent Aptamer Switch
measure ISF with two procedures (Liquid Chromatography - Mass Spectroscopy and Fluoroscopy
Time frame: 2 days
Concentration of Methadone in blood with LC-MS versus Fluorescent Aptamer Switch
measure blood with two procedures (Liquid Chromatography - Mass Spectroscopy and Fluoroscopy
Time frame: 2 days
Pearson Correlation of Methadone between ISF and Blood
measure blood and ISF methadone with LC-MS and determine pearson correlation
Time frame: 2 days
Pearson Correlation between Fluoroscopy and LC-MS ISF Methadone
measure ISF for methadone by LC-MS and Fluoroscopy and determine Pearson correlation
Time frame: 2 days
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