Clinical trials
General Population (no Specific Condition or Disease) clinical trials
Below are recruiting general population (no specific condition or disease) clinical trials, each written for real people, not researchers. We’re tracking 10,548 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT00001620Enrolling by invitation
NIH screening to see which blood studies fit you
This study is a general screening step at the NIH Clinical Center to check whether you might qualify for other NHLBI research protocols. It helps match you (or a donor/healthy volunteer) to the right study and confirms you can consent to participate.
Bethesda, MarylandAges 2–100 - NCT00001987Recruiting
Understanding genetics of insulin resistance and diabetes
This research study looks at the genes and immune system factors that cause severe insulin resistance—a condition where the body doesn't respond well to insulin. Researchers want to understand why some people develop this problem and study family members and healthy volunteers to learn more.
Bethesda, MarylandAges 6 months–120 years - NCT00605878Recruiting
Skin microbiome study in healthy people and eczema patients
This study looks at the types of germs on the skin (skin microbiome) in healthy people and people with skin conditions, including atopic dermatitis (eczema). Researchers collect skin samples to understand how skin germs differ and how that may relate to skin health.
Bethesda, MarylandAges 2–100 - NCT01212003Recruiting
Study of how tuberculosis develops over time
This study follows people with suspected or confirmed tuberculosis (TB), whether they have inactive “latent” TB or active TB. It helps researchers better understand TB’s natural course and may improve future testing and care by allowing collection and storage of samples.
Bethesda, MarylandAges 2–100 - NCT00026884Recruiting
Blood and tissue sample collection for cancer research
This study collects blood and tissue samples from people with cancer or suspected cancer, or from their blood relatives. Researchers use these samples to better understand cancer and develop new treatments.
Bethesda, MarylandAges 2 years+ - NCT00001529Recruiting
Bone marrow cell selection method study for transplants
This study tests improved ways to select and collect bone marrow cells from healthy donors for use in transplants. Researchers are looking for healthy volunteers to donate cells that may help people who need bone marrow transplants.
Bethesda, MarylandAges 18–60 - NCT00071526Recruiting
How the body loses vitamin C in diabetes
This study looks at why people with diabetes may lose more vitamin C in their urine than people without diabetes. By understanding this difference, researchers hope to better understand how diabetes affects the body's nutrition.
Bethesda, MarylandAges 18–65 - NCT01186913Enrolling by invitation
Natural history study for severe combined immune deficiency (SCID)
This study follows children and adults with SCID and related immune disorders to understand how the illness behaves over time. It also helps researchers learn which testing results and genetic types of SCID match different treatment plans.
Birmingham, AlabamaAges Any age - NCT00114647Recruiting
Blood draw to collect plasma or white blood cells for lab tests
This trial uses a special blood-removal procedure called apheresis to collect either plasma or white blood cells for laboratory research. It may help scientists understand infection or immune-related processes by providing specific blood components for study.
Bethesda, MarylandAges 18–100 - NCT00102544Enrolling by invitation
Tracking Devices to Find Abnormalities During Medical Procedures
This study tests technology that uses imaging scans to help doctors locate and reach abnormalities during surgical or interventional procedures. The goal is to make these image-guided procedures more accurate and safer for patients.
Bethesda, MarylandAges 18–120 - NCT01222741Recruiting
Study of people with higher risk of fungal infections
This study looks at immune system differences that can make some people get unusual or frequent fungal (fungus) infections. It may help researchers better understand these conditions, and you may be asked to store blood for future research.
Bethesda, MarylandAges 18–85 - NCT00471250Recruiting
Lung fluid and tissue sample collection for research
This study collects samples from your lungs and airways to help researchers better understand lung diseases. It is not a treatment study, but your participation could help improve future care for people with lung conditions.
Bethesda, MarylandAges 5–100
Hear when a new General Population (no Specific Condition or Disease) trial opens
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Common questions
- Are there clinical trials for general population (no specific condition or disease)?
- Yes. Clin2 currently lists 10,548 recruiting general population (no specific condition or disease) studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a general population (no specific condition or disease) trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a general population (no specific condition or disease) trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.