Clinical trial Recruiting at 1 site Observational Ages 18 and up

Analyzing sweat and saliva to detect chemical levels in patients with chronic or infectious diseases

Official title: Pilot Study to Evaluate Substances in Sweat, Saliva, and Blood

Run by City of Hope Medical Center · NCT04160429 · Data updated 2026-11-12

This study is testing if new home methods for measuring medication levels in sweat and saliva can work as well as the standard lab tests for patients with chronic or infectious diseases.

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Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment100 (estimated)
SponsorCity of Hope Medical Center
Academic / other
Drugs / interventionscyclophosphamide
Locations1 site (Duarte, California)
StatusRecruiting
StartedOctober 30, 2018
Main results expectedJuly 30, 2029
Study endsJuly 30, 2029
Registry record updatedOctober 22, 2026
Trial IDNCT04160429 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients scheduled to receive specific medications for chronic or infectious diseases.

Probably not a fit

Patients with pilocarpine allergies or those who have difficulty understanding written English may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational trial collects and analyzes sweat and saliva samples from patients with chronic or infectious diseases who are receiving medications. The study aims to compare the effectiveness of novel home-based methods for quantifying medication concentrations in these biofluids against the established gold standard of liquid chromatography-mass spectrometry of plasma. Participants will provide samples using a Macroduct Sweat Collection System and complete questionnaires, with follow-up assessments conducted periodically. The goal is to evaluate the feasibility and accuracy of using wearable sweat sensors for health monitoring.

Why it matters

Potential benefit: If successful, this study could lead to more accessible and non-invasive methods for monitoring medication levels in patients.

How similar studies have gone: While the use of wearable sensors for health monitoring is an emerging field, this specific approach of comparing sweat and saliva analysis to plasma concentrations is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
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

Where it's running

  • City of Hope Medical Center
    Duarte, California, United States
    Recruiting

Study contacts

  • Principal investigator: Jeannine S McCune — City of Hope Medical Center

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.