Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol.
Ali Daneshkhah, Sudhir Shrestha, Amanda Siegel...
https://pubmed.ncbi.nlm.nih.gov/28294961/Actively Recruiting
Led by Indiana University · Updated on 2026-07-10
40
Participants Needed
1
Research Sites
4 weeks
Total Duration
Researchers are evaluating whether a set of miniaturized biosensors can noninvasively detect high or low blood sugar events in young people diagnosed with type 1 or type 2 diabetes. The study aims to identify specific volatile organic compounds VOCs in exhaled breath that correspond to these glycemic changes. This diagnostic study takes place in a real-world setting at a diabetes youth camp. Participants diagnosed with diabetes will provide breath samples during a summer camp lasting about one week. They will use a miniaturized device with metal oxide gas sensors to collect breath samples, which will be analyzed alongside samples collected in Tedlar bags and confirmed by gas chromatography-mass spectrometry GC-MS. Blood sugar levels will be tracked with continuous glucose monitors CGMs and finger stick tests to validate the sensor data. During the study, participants will give two breath samples during at least 15 collection events, totaling about 30 samples over the camp week. They will wear their CGM devices as part of their regular diabetes care. Researchers will compare sensor responses and GC-MS results with blood glucose readings to determine if breath analysis can reliably identify blood sugar changes. The study involves close monitoring throughout the camp period and aims to correlate breath sensor features with glucose measurements.
CONDITIONS
Miniaturized Breath-based Sensor for the Detection of Hypo- and Hyperglycemia
M
Mangilal Agarwal, PhD
A
Akanksha Tipparti, M.S.
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Indiana University
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Breath‑based sensor (investigational) | Standard glucose monitoring (CGM or finger‑stick) |
|---|---|---|
| What it is | A handheld or miniaturized breath sensor capturing volatile organic compounds via a device and Tedlar bag during euglycemia, hypoglycemia, and hyperglycemia to correlate breath data with CGM and finger‑stick glucose | Use of continuous glucose monitoring or capillary (finger‑stick) blood glucose measurement, which are current standard methods to assess glucose levels |
| Role in trial | Investigational diagnostic tool under evaluation for correlation with glucose data | Not part of the investigational device, but serves as reference standard with CGM or finger‑stick glucose values |
| Primary use | Detection of glycemic states (euglycemia, hypoglycemia, hyperglycemia) via breath analysis | Routine monitoring of blood glucose for management of diabetes |
| How it is performed | Breath samples are collected into the device and Tedlar bag during different glycemic states alongside CGM and finger‑stick measurements | CGM worn continuously or finger‑stick glucose checked manually to measure blood glucose levels |
| Evidence status | Early investigational stage; performance being evaluated against glucose measurements but clinical accuracy not yet established | Widely validated with established accuracy and reliability for glucose monitoring |
| Important limitations | Proof‑of‑concept method; breath data may be influenced by external factors and requires validation | Finger‑stick causes discomfort and provides occasional readings; CGM may have calibration or adherence issues |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - 1 week
Participants provide breath samples twice during at least 15 collection events over about one week at a diabetes camp. They wear continuous glucose monitors and perform finger stick tests alongside breath sampling. Breath samples are analyzed by sensors and gas chromatography-mass spectrometry (GC-MS).
Multiple breath collection events during camp
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
DIAGNOSTIC
Number of Arms
1
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Lead Sponsor