Development of Microfluidic Patch-type Sweat Sensor

NCT ID: NCT07342387

Last Updated: 2026-01-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

5 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-06-15

Study Completion Date

2026-01-07

Brief Summary

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1\. Background Value of Sweat: Sweat has gained significant attention as a key biomarker for diagnosing dehydration and renal dysfunction (e.g., uremia), as it contains essential indicators that reflect blood concentrations, such as electrolytes and metabolites (creatinine, urea).

Technical Transition: To overcome the limitations of conventional absorbent pads, such as contamination and evaporation, it is essential to develop flexible, wearable microfluidic devices that enable immediate collection and high-precision analysis.

Domestic and International Trends: While countries like the U.S. are already utilizing real-time IoT monitoring technologies in military and sports sectors, there is an urgent need in Korea to secure physiological data optimized for the Korean population and to establish a robust medical analysis system.

2\. Objectives To develop a skin-interfaced microfluidic platform integrated with a SERS biosensor for high-sensitivity, real-time detection of Sodium and Creatinine to monitor dehydration and renal health.

3\. Research Plan

1. Subject Selection: Recruit and obtain informed consent from patients visiting the hospital with renal disease (creatinine levels 1.5 mg/dL or higher).
2. Clinical Schedule: Conduct the clinical study on the subjects' scheduled routine blood test dates.
3. Patch Attachment: Apply the sweat collection patch and a control absorption pad to 1-2 body areas (e.g., center of the chest, forehead).
4. Sweat Induction: Induce sweating by having subjects wait in an electric thermal chamber for 30 minutes.
5. Absorption Pad Collection: For the control pads (which cannot collect time-series data), attach two initially and retrieve them during the early stages of sweat secretion.
6. Microfluidic Patch Collection: Measure the volume of sweat collected (\~100 uL per subject) to calculate sweat loss, then seal and transport to the laboratory.
7. Comparative Sample Processing: Measure the weight of absorption pads before/after use to determine fluid loss. Extract sweat samples (\~500 uL per subject) into micro-tubes for transport.
8. Contamination Control: Utilize dry ice and insulated coolers during transport to prevent sample degradation or contamination.
9. Quantitative Analysis \& Evaluation: Perform quantitative analysis of sodium and creatinine levels from both samples using the proposed SERS-based method and standard analytical tools (HPLC or LC-MS). Compare the changes in biomarkers and sweat loss over time to evaluate and summarize the hydration status and renal function patterns of each subject.

Detailed Description

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Conditions

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Diseases of the Genitourinary System

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

SCREENING

Blinding Strategy

NONE

Study Groups

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Experimental Group

Measurement of creatinine concentration in sweat using a microfluidic patch-based sweat sensor

Group Type EXPERIMENTAL

Time-course changes in Sodium and Creatinine levels.

Intervention Type OTHER

Time-course changes in Sodium and Creatinine levels.

Interventions

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Time-course changes in Sodium and Creatinine levels.

Time-course changes in Sodium and Creatinine levels.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Aged 19 years or older
* Patients with renal disease and a blood (serum) creatinine level of 1.5 mg/dL or higher

Exclusion Criteria

* Subjects who do not provide consent to participate in this study
* Subjects with a medical history of skin allergies related to patches/adhesives
Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Korea University

OTHER

Sponsor Role lead

Responsible Party

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LEE SUNGHO

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Korea University Anam Hospital

Seoul, Seongbuk-gu, South Korea

Site Status

Countries

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South Korea

Other Identifiers

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2024AN0368

Identifier Type: -

Identifier Source: org_study_id

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