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
- NCT00583817Enrolling by invitation
Endovascular repair for thoracic aortic aneurysms and dissections
This study tests whether repairing an enlarged or tearing (dissection) thoracic aorta using a catheter-based procedure can be safer for people who are high-risk for open surgery. It uses specialized stent grafts placed through blood vessels to seal the problem and prevent complications.
Boston, MassachusettsAges 18 years+ - NCT01099982Recruiting
Studying heart tissue and blood changes after advanced heart care
This trial studies how blood and heart tissue change in people with advanced heart failure who are getting an LVAD (a heart pump) or a heart transplant. It may help doctors better understand what’s happening in the heart before and after these treatments.
Murray, UtahAges 13 years+ - NCT00131014Recruiting
Building a family tumor and genetics bank for blood cancers
This study collects and stores tumor/tissue information and family medical history from people with certain blood cancers. It aims to help researchers understand why these illnesses may run in families and use genetic clues for future research.
Boston, MassachusettsAges 18 years+ - NCT01209000Recruiting
Study for children with new kidney protein loss
This study is for children (and some newly diagnosed patients) who have nephrotic syndrome—kidneys leaking a lot of protein. It aims to better understand the kidney condition (sometimes using biopsy) and support future care decisions.
Los Angeles, CaliforniaAges Up to 80 years - NCT00992303Recruiting
Collecting tissue samples during radiation for people with cancer
This study collects tissue samples from people with cancer while they are getting radiation therapy. It also includes healthy participants, to help researchers compare samples and better understand cancer and treatment.
Dallas, TexasAges 18 years+ - NCT00373841Recruiting
Study of genetic and protein changes in idiopathic pulmonary fibrosis
This study looks at genetic (DNA) and protein changes over time in people with idiopathic pulmonary fibrosis, to better understand how the disease progresses. Your participation may help researchers learn patterns that could guide future care.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT00345930Recruiting
Study of liver injury after medicines or supplements
This study looks at people (including children over age 2) who develop liver injury that may be caused by a drug or a complementary/alternative medicine (CAM) product. It helps doctors better understand what causes the injury and how to evaluate it.
Los Angeles, CaliforniaAges 2 years+ - NCT00593203Enrolling by invitation
Share a brain tissue sample during surgery
This study collects a small piece of brain tissue during people’s planned brain surgery. It may help researchers learn more about brain conditions and improve future care.
Nashville, TennesseeAges Any age - NCT00830557Recruiting
Share information and donate tissue samples for pancreatic illnesses
This study collects health information and tissue samples from people with pancreatic cancer or other pancreatic conditions. Your participation may help researchers better understand these diseases and improve future care.
Phoenix, ArizonaAges 18 years+ - NCT01137825Recruiting
Older patient cancer registry for a health check
This study is a registry that collects information from older adults who may be dealing with cancer. It includes a short health and function check to help doctors understand needs and guide care, even for people who turn out not to have cancer.
Boone, North CarolinaAges 65 years+ - NCT00378924Recruiting
Cardiology health study using blood or cheek swabs
This registry collects health information and samples (a blood draw or cheek swab) from adults to help researchers study heart-related conditions. You may qualify whether or not you currently have heart disease, as long as you can safely provide a sample and consent.
Atlanta, GeorgiaAges 20 years+ - NCT00341237Recruiting
Study linking genes and environment to health risks
This study looks at how your genes and your environment may affect your health. It may help researchers better understand who is most at risk so future prevention and care can be more personalized.
Chapel Hill, North CarolinaAges 18–120 - NCT00067054Recruiting
Collecting blood and samples for research
This study collects blood and other samples from healthy volunteers, children, and people with infectious diseases to help advance research. If you join, you may donate blood, urine, or skin samples that will be stored and used in future studies.
Bethesda, MarylandAges 3 years+ - NCT00039689Recruiting
Blood collection study for newly diagnosed HIV research
This research study collects blood cells from people recently diagnosed with HIV who haven't started HIV medicines yet. Researchers use these samples to understand how HIV affects the immune system and develop better treatments.
Bethesda, MarylandAges 18–120 - NCT00090662Recruiting
Healthy volunteer sample collection for research
This study collects blood, urine, stool, and other samples from healthy people to help researchers learn more about diseases and develop better treatments. If you join, you might donate samples like blood or, in some cases, bone marrow or skin, depending on your health and the study's needs.
Bethesda, MarylandAges 18–85 - 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 - 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 - NCT00001351Enrolling by invitation
Long-term study of immune system disorders
This study evaluates and follows patients with inflammatory conditions related to immune system problems. It aims to understand these disorders better and may offer opportunities to participate in other research.
Bethesda, MarylandAges 2 years+ - NCT00001276Recruiting
Understanding and Treating Severe Low Blood Sugar
This study helps doctors diagnose and treat dangerously low blood sugar, especially in people with pancreatic tumors that produce too much insulin. You'll receive comprehensive evaluation and personalized care to manage your condition.
Bethesda, MarylandAges 18–120 - NCT00789009Recruiting
Monitoring people with known or suspected HIV infection
This study tests how well researchers can track HIV-related health and immune changes over time by collecting blood and other samples. It may help you and your care team by creating detailed monitoring, even if your HIV diagnosis is new or still being evaluated.
Bethesda, MarylandAges 18 years+ - NCT00867269Recruiting
Study of causes and progression of low CD4 blood cells
This study looks for what causes and how idiopathic low CD4 cells happen over time, using blood and tissue samples. It may help doctors learn why this occurs and how to better track people with it.
Bethesda, MarylandAges 18 years+ - NCT00001244Recruiting
Studying Immune System Disorders and Family Genetics
This research study examines how the immune system malfunctions in patients with common variable immunodeficiency (CVID)—a condition where the body doesn't make enough antibodies to fight infections. Researchers want to understand the genetics and immune patterns to help develop better treatments. Family members may also be asked to participate to help identify genetic causes.
Bethesda, MarylandAges 2–120 - NCT00001205Recruiting
Understanding neurocysticercosis outcomes in treated patients
This study follows patients who have been treated for neurocysticercosis—a brain infection caused by a parasite—to learn how they recover over time and what long-term effects they experience. By joining, you'll help doctors better understand this condition and improve care for future patients.
Bethesda, MarylandAges 3–99 - 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
Hear when a new General Population (no Specific Condition or Disease) trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.