Diabetes MellitusSUGARNCT02956642
Study to Understand Gaining Access to Blood Glucose Records
A study testing Livongo Health System and iHealth Glucose Meter in people with Diabetes Mellitus, run by University of California, San Francisco at 1 site in United States.
Trial summary
This study is a two-arm randomized controlled trial in which participants will receive either the Livongo Health system or iHealth glucose meter for measuring their blood glucose. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Diabetes Mellitus
- What is being tested?
- Livongo Health System and iHealth Glucose Meter
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 84 participants
- Where
- 1 siteUnited States
- Study dates
- 14 Nov 2018to 17 Jan 2021
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- People with type 2 diabetes mellitus on any type of medication
- Adults, age 18 years or older
- iOS Smartphone with access to data and/or Wi-Fi
- Willing to answer survey questions throughout the study
- Willing to visit a lab for 3 blood draws at no cost to participants
Who cannot join
- Using continuous glucose monitoring during the study period
- Using an insulin pump during the study period
- Unable or unwilling to switch blood glucose meters to the study meter
- Hospitalization for Diabetic ketoacidosis (DKA) or hypoglycemia in the past 1 month prior to enrollment
- Pregnant patients, or intention to become pregnant during the study period
Trial locations and contacts
1 site in 1 country.
United States1 site
University of California, San Francisco
San Francisco, California, 94158
About this study
Official title: Study to Understand Gaining Access to Blood Glucose Records (SUGAR), A Randomized Controlled Trial of the Effect of the Livongo Health Diabetes Management Program vs. Standard Care on Glycemic Control
This study is a two-arm randomized controlled trial in which participants will receive either the Livongo Health system or iHealth glucose meter for measuring their blood glucose. The study hypothesizes the use of the Livongo Health system results in a greater improvement in A1c compared to standard blood glucose monitoring, as demonstrated by the iHealth Bluetooth-enabled glucose meter.
Read the detailed description
Participants in this study will partake in study surveys, daily blood glucose monitor measurements, and blood sampling for the duration of their participation. The study intends to recruit and randomize 300 participants.
- Surveys and Measurements All study participants may complete surveys via their personal iOS smartphone device on: study qualification (intake survey/eligibility screener), diabetes status (initial diabetes survey), physical activity (iPAQ), quality of life (SF-12), vitals, demographics hospitalizations and interaction with health care provider (attached), and diabetes distress. Most survey data will be collected at 1, 3, and 6 months. There will also be Weekly Engagement surveys which will be two simple questions each week. At the end of the study, a Feedback survey will ask participants about their study experiences. Surveys will each have a simple description to introduce participants to the survey they are being asked to take. These surveys will be administered through the Eureka mHealth Research Platform, the study's main tool for data collection, data storage, and study management. Specific usability assessments that are native to the Livongo or iHealth platform may also be shown through the device to the participants in order to gather user feedback information. After qualifying and providing consent to participate in the study, participants will be referred to a convenient lab or receive a mail-in lab test kit for establishing hemoglobin A1c (A1c) levels and lipid panel levels. A1c tests will be collected at months 1 (baseline), 3, and 6 (closeout). For each A1c test performed in the lab, 1mL (milliliter) of blood will be drawn. Lipid panels (total cholesterol, LDL, HDL, and triglycerides) will be collected at months 1 (baseline) and 6 (closeout). For each lipid panel, 1mL of blood will be drawn. If participants elect to use a mail-in lab test kit, for each A1c test or lipid panel, 35 microliters of blood will be collected and mailed in for testing (total 75 microliters at months 1 and 6, and 30 microliters at month 3).
- Randomization Once the baseline A1c value is obtained, the patient will be randomized (block randomization by diabetes type).
- Device Usage After randomization, participants will receive either the Livongo Health system or the iHealth glucose meter by mail. If a participant is randomized to the iHealth treatment group, participants will download the iHealth iOS application and receive an iHealth blood glucose meter in the mail. Participants will link the iHealth application with a mobile version of the Eureka mHealth Research Platform. If a participant is randomized to the Livongo system treatment group, the participant will receive the Livongo blood glucose meter device in the mail, create a Livongo account, and link their Livongo account with the Eureka mHealth Research Platform. Livongo- or iHealth-specific instructions will be provided with each meter and a study coordinator will be available to answer study participant questions about using the BG meters. Participants may be referred to Livongo or iHealth customer service for technical support, if needed. Participants will not be given specific instructions on how often to check their BG, or how often they should use the Livongo system or iHealth glucose meter as a part of this study. This is done in order to determine the uptake of the intervention and resulting behavior without outside prompting. Participants will either use the Livongo system or the iHealth glucose meter for 6 months from the time of enrollment in the study.
- Messaging/Reminders Participants who have been mailed a BG (Blood Glucose) meter but are not using the device after two weeks will be contacted by in-app push notifications, text messages, email or a phone call for device setup and/or assistance.
Participants will also receive reminders to complete study activities via in-app push notifications, text messages, email or a phone call.
Two weeks prior to the end of the study period, participants will be contacted by email and/or receive in-app push notifications to remind them to complete their A1c measurement and closeout surveys.
Note: Participation in this research study will not affect individual participants' standard clinical care for diabetes. Participants will remain under the care of their current health care provider and will be able to continue receiving all usual care from that provider. The health care provider will continue to provide recommendations for the number of times the participant should check their blood glucose. Although the participant wil be asked to use a different glucose meter for this study, the number of times they use it will still be determined by their health care provider. The same information that they received from their existing glucose meter will be available from the study glucose meter. During the study, they will be provided with glucose meter strips at no charge, to ensure that an insufficient number of strips will not interfere with their standard of care.
- Conditions
- Diabetes Mellitus
- Being tested
- Livongo Health System, iHealth Glucose Meter
- Medical subject headings
- Diabetes Mellitus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Livongo Health SystemDevice
Participants will be asked to use the Livongo Health System to manage their blood glucose.
iHealth Glucose MeterDevice
Participants will be asked to use the iHealth Glucose Meter to take blood glucose measurements.
| Study group | Role | What they receive |
|---|---|---|
| Blood Glucose Monitoring System | Experimental | Participants in this arm will receive the Livongo Health System to manage diabetes. 150 participants will participate in this arm. Receives: Device: Livongo Health System |
| Standard Blood Glucose Monitoring | Active comparator | Participants in this arm will receive the iHealth Glucose Meter to take blood glucose measurements that will then be compared to participants from the Livongo Health System arm. 150 participants will participate in this arm. Receives: Device: iHealth Glucose Meter |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean HbA1c Levels
Three HbA1c measures per study participant will be acquired at 3 points in the study duration (baseline, 3 months, and 6 months). In order to compare the changes in HbA1c, the values may be analyzed and separated with regard to duration of diabetes (days, months, years), and/or HbA1c levels at baseline. Reported in this table are the means for all participants for each given timepoint.
Measured: 6 months
Change in HbA1c
In this analysis, change in HbA1c within individual participants was compared from baseline to 6 months. Only participants with 6-month data were included.
Measured: 6 months
Secondary outcomes (2)
Mean Fasting LDL
As a secondary outcome, we will determine the effect of use of the Livongo Health system on fasting lipid panels (LDL). A lipid panel will be done at baseline, 3 months, and at 6 months. Reported in this table are means for all participants with data at each timepoint.
Measured: 6 months
Change in Fasting LDL
In this analysis, change in fasting LDL within individual participants was compared from baseline to 6 months. Only participants with 6-month data were included.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Nov 2016 (estimated)
- Study start14 Nov 2018
- Primary completion17 Jan 2021
- Study completion17 Jan 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Diabetes MellitusStudies of the same condition, open and under way.
- More trials run by University of California, San FranciscoThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 84 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, San Francisco
- Sponsor type
- University, hospital or other
- Collaborators
- Livongo Health
- Responsible party
- Sponsor
- Investigators
- Jenise Wong, MD, PhD, Principal investigator, University of California, San Francisco
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02956642
- Sponsor's protocol ID
- EUR-001
- Acronym
- SUGAR
- Status last verified
- Apr 2025
- First submitted
- 31 Oct 2016
- Last updated
- 30 Apr 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 30 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Study to Understand Gaining Access to Blood Glucose Records (SUGAR), A Randomized Controlled Trial of the Effect of the Livongo Health Diabetes Management Program vs. Standard Care on Glycemic Control
- ClinicalTrials.gov ID
- NCT02956642
- Acronym / sponsor ID
- SUGAR / EUR-001
- Conditions
- Diabetes Mellitus
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 84 participants (actual)
- Lead sponsor
- University of California, San FranciscoUniversity, hospital or other
- Collaborators
- Livongo Health
- Study start
- 14 Nov 2018 (actual)
- Primary completion
- 17 Jan 2021 (actual)
- Study completion
- 17 Jan 2021 (actual)
- First posted
- 7 Nov 2016 (estimated)
- Results
- Posted 30 Apr 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study is a two-arm randomized controlled trial in which participants will receive either the Livongo Health system or iHealth glucose meter for measuring their blood glucose. The study hypothesizes the use of the Livongo Health system results in a greater improvement in A1c compared to standard blood glucose monitoring, as demonstrated by the iHealth Bluetooth-enabled glucose meter.
Detailed description
Participants in this study will partake in study surveys, daily blood glucose monitor measurements, and blood sampling for the duration of their participation. The study intends to recruit and randomize 300 participants.
- Surveys and Measurements All study participants may complete surveys via their personal iOS smartphone device on: study qualification (intake survey/eligibility screener), diabetes status (initial diabetes survey), physical activity (iPAQ), quality of life (SF-12), vitals, demographics hospitalizations and interaction with health care provider (attached), and diabetes distress. Most survey data will be collected at 1, 3, and 6 months. There will also be Weekly Engagement surveys which will be two simple questions each week. At the end of the study, a Feedback survey will ask participants about their study experiences. Surveys will each have a simple description to introduce participants to the survey they are being asked to take. These surveys will be administered through the Eureka mHealth Research Platform, the study's main tool for data collection, data storage, and study management. Specific usability assessments that are native to the Livongo or iHealth platform may also be shown through the device to the participants in order to gather user feedback information. After qualifying and providing consent to participate in the study, participants will be referred to a convenient lab or receive a mail-in lab test kit for establishing hemoglobin A1c (A1c) levels and lipid panel levels. A1c tests will be collected at months 1 (baseline), 3, and 6 (closeout). For each A1c test performed in the lab, 1mL (milliliter) of blood will be drawn. Lipid panels (total cholesterol, LDL, HDL, and triglycerides) will be collected at months 1 (baseline) and 6 (closeout). For each lipid panel, 1mL of blood will be drawn. If participants elect to use a mail-in lab test kit, for each A1c test or lipid panel, 35 microliters of blood will be collected and mailed in for testing (total 75 microliters at months 1 and 6, and 30 microliters at month 3).
- Randomization Once the baseline A1c value is obtained, the patient will be randomized (block randomization by diabetes type).
- Device Usage After randomization, participants will receive either the Livongo Health system or the iHealth glucose meter by mail. If a participant is randomized to the iHealth treatment group, participants will download the iHealth iOS application and receive an iHealth blood glucose meter in the mail. Participants will link the iHealth application with a mobile version of the Eureka mHealth Research Platform. If a participant is randomized to the Livongo system treatment group, the participant will receive the Livongo blood glucose meter device in the mail, create a Livongo account, and link their Livongo account with the Eureka mHealth Research Platform. Livongo- or iHealth-specific instructions will be provided with each meter and a study coordinator will be available to answer study participant questions about using the BG meters. Participants may be referred to Livongo or iHealth customer service for technical support, if needed. Participants will not be given specific instructions on how often to check their BG, or how often they should use the Livongo system or iHealth glucose meter as a part of this study. This is done in order to determine the uptake of the intervention and resulting behavior without outside prompting. Participants will either use the Livongo system or the iHealth glucose meter for 6 months from the time of enrollment in the study.
- Messaging/Reminders Participants who have been mailed a BG (Blood Glucose) meter but are not using the device after two weeks will be contacted by in-app push notifications, text messages, email or a phone call for device setup and/or assistance.
Participants will also receive reminders to complete study activities via in-app push notifications, text messages, email or a phone call.
Two weeks prior to the end of the study period, participants will be contacted by email and/or receive in-app push notifications to remind them to complete their A1c measurement and closeout surveys.
Note: Participation in this research study will not affect individual participants' standard clinical care for diabetes. Participants will remain under the care of their current health care provider and will be able to continue receiving all usual care from that provider. The health care provider will continue to provide recommendations for the number of times the participant should check their blood glucose. Although the participant wil be asked to use a different glucose meter for this study, the number of times they use it will still be determined by their health care provider. The same information that they received from their existing glucose meter will be available from the study glucose meter. During the study, they will be provided with glucose meter strips at no charge, to ensure that an insufficient number of strips will not interfere with their standard of care.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Blood Glucose Monitoring System | Experimental | Device: Livongo Health SystemParticipants in this arm will receive the Livongo Health System to manage diabetes. 150 participants will participate in this arm. |
| Standard Blood Glucose Monitoring | Active comparator | Device: iHealth Glucose MeterParticipants in this arm will receive the iHealth Glucose Meter to take blood glucose measurements that will then be compared to participants from the Livongo Health System arm. 150 participants will participate in this arm. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- People with type 2 diabetes mellitus on any type of medication
- Adults, age 18 years or older
- iOS Smartphone with access to data and/or Wi-Fi
- Willing to answer survey questions throughout the study
- Willing to visit a lab for 3 blood draws at no cost to participants
Key exclusion criteria (5 listed)
- Using continuous glucose monitoring during the study period
- Using an insulin pump during the study period
- Unable or unwilling to switch blood glucose meters to the study meter
- Hospitalization for Diabetic ketoacidosis (DKA) or hypoglycemia in the past 1 month prior to enrollment
- Pregnant patients, or intention to become pregnant during the study period
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Livongo Health SystemParticipants will be asked to use the Livongo Health System to manage their blood glucose. | Device | Blood Glucose Monitoring System |
| iHealth Glucose MeterParticipants will be asked to use the iHealth Glucose Meter to take blood glucose measurements. | Device | Standard Blood Glucose Monitoring |
Primary outcome
Mean HbA1c Levels
Time frame: 6 months
Three HbA1c measures per study participant will be acquired at 3 points in the study duration (baseline, 3 months, and 6 months). In order to compare the changes in HbA1c, the values may be analyzed and separated with regard to duration of diabetes (days, months, years), and/or HbA1c levels at baseline. Reported in this table are the means for all participants for each given timepoint.
Change in HbA1c
Time frame: 6 months
In this analysis, change in HbA1c within individual participants was compared from baseline to 6 months. Only participants with 6-month data were included.
2 secondary outcomes
Mean Fasting LDL
Time frame: 6 months
Change in Fasting LDL
Time frame: 6 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Apr 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jenise Wong, MD, PhD principal investigator
University of California, San Francisco
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Livongo Health System and iHealth Glucose Meter in people with Diabetes Mellitus, run by University of California, San Francisco at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 30 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 30 Apr 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean HbA1c Levels (time frame: 6 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Apr 2025.