Sweat sensors could replace needles for drug monitoring
NCT ID NCT04160429
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This pilot study is testing whether a smart wristband can accurately measure drug levels in sweat compared to standard blood tests. Researchers will collect sweat, saliva, and blood samples from 100 patients with chronic or infectious diseases who are taking medications like cyclophosphamide or metformin. The goal is to see if wearable sweat sensors can reliably monitor drug concentrations for easier, less invasive health tracking.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could lead to a non-invasive way to monitor drug levels using a wearable sweat sensor, reducing the need for frequent blood draws.
- What could go wrong
- This is a small pilot study focused on measurement accuracy, not treatment. The technology may not be sensitive enough for very low drug concentrations in sweat.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2018
- Expected to finish
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Jul 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients with chronic or infectious diseases scheduled to receive medications
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Scheduled to receive medications including, but not limited to, cyclophosphamide, mycophenolic acid, mycophenolate mofetil, metformin or busulfan (any dose, any number of doses, any dosing frequency) as part of treatment at any time. Patients with chronic or infectious diseases can participate * Willingness to: * Provide blood, sweat, and saliva samples * Permit medical record review Exclusion Criteria: * Pilocarpine allergy * Difficulty with understanding written English
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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City of Hope Medical Center
RECRUITINGDuarte, California, 91010, United States
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