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Study identifier: NCT06592261 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Graded Insulin Suppression Test P&F

Condition: Insulin Resistance · Hyperinsulinemia · Obesity  ·  Sponsor: Columbia University

PhasePhase 1
Planned participants15
Who can joinAll sexes, 18 Years to 65 Years
Healthy volunteersYes

About this study

The goal of this study is to learn about how the hormone insulin controls blood sugar in a variety of people. The main question it aims to answer is about how much insulin the body actually needs to maintain a normal blood sugar level. Participants will be asked to come in for a one-day study visit in which they will undergo a "graded insulin suppression test" ("GIST"). The GIST involves intravenous (into the vein) infusions of octreotide, a medication that turns off the body's own production of insulin, as well as replacement of insulin at two different levels (low and high), with or without replacement of glucagon, and glucose (sugar). The study investigators will check blood sugar levels every few minutes during the procedure to determine the effect of the two different insulin levels. This study will evaluate the GIST in both healthy volunteers and those at higher risk for type 2 diabetes.

This description comes directly from the study's public registry record.

Talk to the study team

Joshua R Cook, MD, PhD  ·  2123056289  ·  jrc2175@cumc.columbia.edu

Ishwari Nagnur  ·  2123059336  ·  imn2113@cumc.columbia.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Columbia University Irving Medical CenterNew York, New York, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06592261