Type 2 DiabetesNCT02388100
The GRADE Capillary Blood Collection Pilot Study
An observational study of Type 2 Diabetes, run by GRADE Study Group at 5 sites in United States.
Trial summary
This pilot study is planned to validate the comparability of HbA1c results obtained from whole blood collection via venous phlebotomy versus a capillary collection of whole blood. Read more about this study
- Who is it for?
- Ages 30 years and older
- Conditions the study is for
- Type 2 Diabetes
- What is being tested?
- Capillary HbA1c collection
- Type of treatment
- Surgery or procedure
- How many people
- 70 participants
- Where
- 5 sitesUnited States
- Study dates
- Mar 2015to Aug 2016
- Phase
- Observational
- Are there results?
- None posted in the registry
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 30 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: All GRADE study participants scheduled for a follow-up visit at selected GRADE clinical sites.
Who may be able to join
- Current GRADE participant with a scheduled follow-up visit
Who cannot join
- GRADE participants attending first quarterly (Month 3) visit or an annual visit
Trial locations and contacts
5 sites in 1 country.
5 sites in 1 country
United States5 sites
Pennington Biomedical Research Center
Baton Rouge, Louisiana
University of Colorado
Denver, Colorado
Pacific Health Research and Education Institute (VA Pacific Islands)
Honolulu, Hawaii
International Diabetes Center
Minneapolis, Minnesota
Southwestern American Indian Center
Phoenix, Arizona
About this study
Official title: The Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE Study) Capillary Blood Collection: A Pilot Study
This pilot study is planned to validate the comparability of HbA1c results obtained from whole blood collection via venous phlebotomy versus a capillary collection of whole blood. The participant will self-collect capillary blood into HbA1c prep vials containing a buffer; these prep vials will be sent to the CBL at ambient temperature via US Postal System (USPS) mail. The feasibility of self-collection of these capillary samples by GRADE participants will also be evaluated.
- Conditions
- Type 2 Diabetes
- Being tested
- Capillary HbA1c collection
- Medical subject headings
- Diabetes Mellitus, Type 2
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Capillary HbA1c collectionProcedure or surgery
What is being measured
The primary outcome is the main question the study is designed to answer.
HbA1c obtained from venous versus capillary measurements at one point in time for each participant.
Measured: Cross sectional
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Mar 2015 (estimated)
- Study startMar 2015
- Primary completionAug 2016
- Study completionAug 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Type 2 DiabetesStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 70 participants (actual)
Sponsor and investigators
- Lead sponsor
- GRADE Study Group
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- David Nathan, MD, Study chair, Massachusetts General Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02388100
- Sponsor's protocol ID
- GRADE_CAP
- Other IDs
- 1U01DK098246-01
- Status last verified
- Nov 2024
- First submitted
- 6 Mar 2015
- Last updated
- 15 Nov 2024
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Nathan DM, Krause-Steinrauf H, Braffett BH, Arends VL, Younes N, McGee P, Lund C, Johnson M, Lorenzi G, Gao X, Steffes MW, Lachin JM; GRADE Research Group; DCCT/EDIC Research Group. Comparison of central laboratory HbA1c measurements obtained from a capillary collection versus a standard venous whole blood collection in the GRADE and EDIC studies. PLoS One. 2021 Nov 15;16(11):e0257154. doi: 10.1371/journal.pone.0257154. eCollection 2021.
PubMed 34780485
Study at a glance
From the registry record, last updated by the sponsor on 15 Nov 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE Study) Capillary Blood Collection: A Pilot Study
- ClinicalTrials.gov ID
- NCT02388100
- Acronym / sponsor ID
- GRADE_CAP
- Conditions
- Type 2 Diabetes
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 70 participants (actual)
- Lead sponsor
- GRADE Study GroupUniversity, hospital or other
- Collaborators
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- Study start
- Mar 2015
- Primary completion
- Aug 2016 (actual)
- Study completion
- Aug 2016 (actual)
- First posted
- 13 Mar 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This pilot study is planned to validate the comparability of HbA1c results obtained from whole blood collection via venous phlebotomy versus a capillary collection of whole blood. The participant will self-collect capillary blood into HbA1c prep vials containing a buffer; these prep vials will be sent to the CBL at ambient temperature via US Postal System (USPS) mail. The feasibility of self-collection of these capillary samples by GRADE participants will also be evaluated.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 30 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- All GRADE study participants scheduled for a follow-up visit at selected GRADE clinical sites.
Key inclusion criteria (1 listed)
- Current GRADE participant with a scheduled follow-up visit
Key exclusion criteria (1 listed)
- GRADE participants attending first quarterly (Month 3) visit or an annual visit
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 |
|---|---|---|
| Capillary HbA1c collection | Procedure or surgery | – |
Primary outcome
HbA1c obtained from venous versus capillary measurements at one point in time for each participant.
Time frame: Cross sectional
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Nov 2024.
- Results publication: PubMed 34780485Nathan DM, Krause-Steinrauf H, Braffett BH, Arends VL, Younes N, McGee P, Lund C, Johnson M, Lorenzi G, Gao X, Steffes MW, Lachin JM; GRADE Research Group; DCCT/EDIC Research Group. Comparison of central laboratory HbA1c measurements obtained from a capillary collection versus a standard venous whole blood collection in the GRADE and EDIC studies. PLoS One. 2021 Nov 15;16(11):e0257154. doi: 10.1371/journal.pone.0257154. eCollection 2021.
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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.
David Nathan, MD study chair
Massachusetts General Hospital
5 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Type 2 Diabetes, run by GRADE Study Group at 5 sites 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 1 inclusion and 1 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 15 Nov 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 5 sites 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
HbA1c obtained from venous versus capillary measurements at one point in time for each participant. (time frame: Cross sectional). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02388100, which also lists 1 linked publication.
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 15 Nov 2024; AzTrials last refreshed its copy on 30 Oct 2026.