How to Join a GLP-1 Clinical Trial in the US: Step by Step

Joining a GLP-1 clinical trial in the US comes down to four steps: search the federal registry at ClinicalTrials.gov for studies on obesity or diabetes near you, read each study’s eligibility criteria, contact the person listed at the study location, and ask your questions before enrolling. You can also search the drug makers’ own trial finders, or register once with a free service like ResearchMatch and let researchers invite you. Nothing on this page is medical advice; a clinician who knows your health history can help you weigh whether a trial fits your situation.

A clinical trial is research, not treatment. The NIH frames participation as helping researchers find better ways to treat, prevent, diagnose, and understand disease ^[4]. You may get an experimental drug, an approved comparator drug, or a placebo, and the study team follows a fixed protocol. That is the trade-off: taking part in research comes with uncertainty about what you receive and how you are monitored.

What exactly is a clinical trial?

A clinical study is research with human volunteers that is intended to add to medical knowledge. There are two types: interventional studies, which are also called clinical trials, and observational studies ^[1][2]. In an interventional trial, researchers give participants a specific intervention and measure what happens. In an observational study, researchers only observe and record information.

Each trial is divided into arms. An arm is a group of participants that receives a specific intervention, or no intervention, according to the trial’s protocol ^[1][2]. Arm types include the experimental arm (the treatment being studied), an active comparator arm (a treatment clinicians already consider effective, such as an approved drug), a placebo comparator arm, a sham arm, and a no-intervention arm ^[1][2].

How participants are assigned to arms is called allocation, and the two types are randomized and nonrandomized ^[1][2]. In a randomized trial, chance decides which arm you land in. The enrollment figure on a record is the number of participants, and the “estimated” enrollment is the target number the researchers need ^[1][2].

Trials also run in phases. Early Phase 1, formerly listed as Phase 0, covers exploratory trials before traditional phase 1 trials. These involve very limited human exposure to the drug and have no therapeutic or diagnostic goals, such as screening or microdose studies ^[1][2]. A later-phase trial of a new GLP-1 medicine is a different experience from an early exploratory one, and the phase is stated on the record.

Where do I search for weight loss clinical trials near me?

The authoritative place to search is ClinicalTrials.gov, the US registry of clinical studies ^[1]. Every record carries a unique identification code called the NCT number, assigned at registration. The format is “NCT” followed by 8 digits, for example NCT00000419 ^[1][2].

Records are searchable by fields that matter for finding a fit: condition or disease, recruitment status, facility location, eligibility, and contact information ^[1][2]. The condition field covers the disease, disorder, syndrome, illness, or injury being studied, and on ClinicalTrials.gov it can also include other health-related issues such as lifespan, quality of life, and health risks ^[1][2]. So searching terms like “obesity,” “weight,” or “type 2 diabetes” can surface studies beyond those exact words.

To find current GLP-1 or obesity trials recruiting near you, run the search yourself on ClinicalTrials.gov rather than relying on any count published elsewhere. The number of recruiting studies changes constantly as studies open, fill, and close. Filter by recruiting status and your location, then open each record.

The NIH also hosts a “Finding a Clinical Trial” guide that covers how to search for trials at NIH, around the nation, and worldwide ^[4]. Novo Nordisk states that it registers all of its studies on ClinicalTrials.gov before recruitment begins, and that studies with sites in the EU are also entered in the European Clinical Trials Database ^[8]. That means the registry, not an ad or a social media post, is the place to confirm a study exists.

How do I read the eligibility criteria on a study record?

Eligibility criteria are the requirements a person must meet to participate. They come in two parts: inclusion criteria, which are required to participate, and exclusion criteria, which are reasons a person is not allowed to participate ^[1][2]. Read both lists in full before contacting a site, because a single exclusion, such as a medication you take, can rule you out.

Eligibility types include whether the study accepts healthy volunteers, age or age group requirements, and sex limits ^[1][2]. The registry’s age groups are Child (birth to 17), Adult (18 to 64), and Older Adult (65 and up) ^[1][2]. The “accepts healthy volunteers” flag means people who do not have the condition being studied may participate ^[1][2].

Do not assume a specific threshold, such as a particular BMI cutoff or a required washout period off your current medicine, applies to a given study. Those details vary by protocol and are stated only on the actual study record. Verify them there, and bring questions about anything unclear to the study contact.

Sponsor trial finders summarize listings in plain terms. On Amgen’s finder, for example, the MARITIME-HF heart failure study appears as recruiting, all sexes, 18 to 99 years ^[9]. The full record behind any listing holds the complete criteria.

Who do I contact, and why do study statuses vary?

Every study record has a Contact field: the name and contact information for the person who answers enrollment questions ^[1][2]. Importantly, each location where the study is conducted may also list its own specific contact, who may be better able to answer your questions ^[1][2]. Facility names and locations are recorded per site on each study record ^[1][2].

Contact the location-specific contact when one is listed, since that person knows whether the site near you still has openings. Sites fill at different rates, and a study can be listed as recruiting overall while the location closest to you is full. The site contact is the only person who can tell you that.

Can I search the drug maker’s own trial finder?

Yes. Most large drug makers run public trial finders. These are a second layer on top of ClinicalTrials.gov. Here are the finders published by major drug makers:

Drug maker	Trial finder
Eli Lilly	trials.lilly.com [7]
Novo Nordisk	novonordisk-trials.com [8]
Amgen	amgentrials.com [9]
Roche / Genentech	forpatients.roche.com [10]
Boehringer Ingelheim	trials.boehringer-ingelheim.com [11]
AstraZeneca	astrazenecaclinicaltrials.com [12]
Pfizer	pfizer.com/science/find-a-trial [13]

Amgen’s finder offers a keyword and location search with distance options of 10, 50, 100, 150, 200, and 250 miles, plus a filter for studies that are recruiting or will be recruiting ^[9]. Amgen also offers a useful search tip that applies anywhere: put quotation marks around multi-word search terms, such as “lung cancer,” for the most accurate results ^[9].

Roche’s site lists regional versions: US visitors are directed to genentech-clinicaltrials.com, and Canadian visitors to findrochetrials.ca ^[10].

Whatever a sponsor finder shows, confirm the study on ClinicalTrials.gov using its NCT number before proceeding. The registry record is the official version.

Can I register once and let studies contact me?

Yes. ResearchMatch, at researchmatch.org, is a nonprofit program funded by the NIH that connects people interested in research with researchers at medical centers across the US ^[6]. It is free and secure, and researchers use it to invite volunteers to take part in their studies ^[6].

The scale is large: ResearchMatch lists 121,864 volunteers, 18,637 researchers, 1,402 studies, 284 institutions, and 1,018 publications ^[6]. It collaborates with 284 participating institutions and 70 community organizations ^[6].

One caution from volunteers themselves: signing up does not guarantee selection. A ResearchMatch volunteer testimonial notes having volunteered on several occasions without being selected for in-person studies ^[6]. Treat it as one channel among several, not a shortcut.

What should I ask before signing consent?

Before agreeing to anything, read the study record closely and ask the study team questions. Key items to check:

Which arms does the study have, and how am I assigned? The placebo comparator arm is a listed arm type, so check whether the study includes one and how allocation works, randomized or not ^[1][2]. In a cross-over assignment, all participants receive each intervention, just in a different order. For example, in a two-by-two cross-over, one group gets drug A then drug B, and the other gets drug B then drug A, so everyone receives both at some point ^[1][2]. An active comparator arm means some participants receive a treatment clinicians already consider effective, such as an approved drug ^[1][2].

Who is watching for safety? A Data Monitoring Committee, also called a data safety and monitoring board or DSMB, is a group of independent scientists who monitor the safety and scientific integrity of a trial. The DMC can recommend to the sponsor that the trial be stopped if it is not effective, is harming participants, or is unlikely to serve its scientific purpose ^[1][2]. Ask whether the study has one.

How are side effects handled and recorded? An adverse event is an unfavorable change in a participant’s health, including abnormal laboratory findings, that happens during the study or within a set period after it ends. The change may or may not be caused by the treatment being studied ^[1][2]. Ask how adverse events are monitored and what happens if you have one.

Can the results be published? The “certain agreements” field on a record discloses any agreement between the sponsor and the principal investigator that does not allow the investigator to discuss or publish the study results after the study is completed ^[1][2]. This is required information under the Food and Drug Administration Amendments Act of 2007, Section 801 ^[1][2]. Check that field if publication matters to you.

When will the results be available?

Results take time, and it helps to know the rules. The standard deadline for submitting results to ClinicalTrials.gov is generally one year after the primary completion date. Extensions are possible, but a request must demonstrate good cause, and all requests must be reviewed and granted by the NIH ^[1][2]. A sponsor can also submit a certification to delay results submission by up to 2 years after the certification or extension first-submitted date while applying for FDA approval of a new drug or a new use of an approved drug ^[1][2].

Novo Nordisk publishes its own commitments as an example of sponsor practice. It submits results from phase 2 to 4 studies to ClinicalTrials.gov following US FDA rules, publishes lay-language summaries for phase 1 to 4 studies completed on or after 1 January 2016, and publishes result summaries for studies completed after 1 January 2006. Observational study summaries are published 12 months after completion, and summaries for discontinued programs within 12 months of the announcement or completion, whichever is later ^[8]. It aims to submit key results to conferences or journals within 12 to 18 months of study completion ^[8].

Novo Nordisk also makes anonymized participant-level data from its phase 2 to 4 studies started after January 2014 requestable through the Vivli platform, once the product’s indications are approved in both the EU and the US ^[8].

What is expanded access, and is it another way to get a new GLP-1?

Expanded access, also called compassionate use, is a way for patients with serious diseases or conditions who cannot participate in a clinical trial to gain access to a medical product that has not been approved by the FDA ^[1][2]. It is a separate legal route from joining a trial, and it is not consumer sales.

There are three FDA expanded access types: Individual Patients, which covers a single patient and includes emergency situations; Intermediate-size Population, for more than one patient but generally fewer than a Treatment IND/Protocol; and Treatment IND/Protocol, which allows a large, widespread population access and is only available if the product is already being developed for marketing for the same use ^[1][2].

Expanded access status on a record can be Available, No longer available, Temporarily not available, or Approved for marketing ^[1][2]. The FDA publishes patient-facing expanded access information at fda.gov ^[1][2]. If a trial is not possible for you, this is the regulated channel to ask a clinician about, not an informal one.

How do I spot red flags?

Any claim about a study can be checked by looking up its 8-digit NCT number on ClinicalTrials.gov ^[1][2]. If a recruiter, website, or social media post cannot give you an NCT number, or the number does not match what they are describing, walk away.

Expanded access by definition requires the product to be unapproved by the FDA and routed through regulated channels ^[1][2]. So an offer to sell you an unapproved GLP-1 directly is not expanded access and not a trial. Verify before you share health information, money, or personal details with anyone recruiting for a study.

What is the quick checklist for acting today?

1. Search ClinicalTrials.gov by condition, recruitment status, and your location, and confirm each study’s NCT number ^[1][2].
2. Read the full inclusion and exclusion criteria in the eligibility section of the record ^[1][2].
3. Contact the location-specific study contact, not just the general study contact, and ask your questions ^[1][2].
4. Optionally register on ResearchMatch so researchers can invite you to studies, understanding that registration does not guarantee selection ^[6].
5. Before consenting, ask about the arms and allocation, the monitoring committee, adverse event handling, and any publication restrictions ^[1][2].
6. Bring the specifics to a clinician who knows your history before making a decision.

A clinical trial is research meant to add to medical knowledge, and taking part is what helps researchers find better ways to treat, prevent, diagnose, and understand disease ^[1][2][4]. It can also mean a placebo, extra clinic visits, and unknown risks. The registry record, the site contact, and your own clinician are the three places to get the facts straight before you sign anything.

Sources

1. ClinicalTrials.gov. Home.
2. ClinicalTrials.gov. Learn About Studies.
3. US Food and Drug Administration. Clinical trials: what patients need to know.
4. National Institutes of Health. NIH Clinical Research Trials and You.
5. ClinicalTrials.gov. Study record NCT07629401.
6. ResearchMatch. Make a positive impact by volunteering for research.
7. Eli Lilly and Company. Find Lilly Clinical Trials: Learn About Our Research.
8. Novo Nordisk. Our commitment to share information about clinical studies.
9. Amgen. Clinical Trials: Find Clinical Trials.
10. Roche. Diseases, Medical Info & Clinical Studies: ForPatients.
11. Boehringer Ingelheim. Medical & Clinical Trials: Clinical Research.
12. AstraZeneca. Discover AstraZeneca Clinical Trials and Research Studies.
13. Pfizer. Find a Clinical Trial: Pfizer Clinical Trials.