Clinical trials
Biomarkers / Blood clinical trials
Below are recruiting biomarkers / blood clinical trials, each written for real people, not researchers. We’re tracking 215 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07435285Recruiting
Comparing inflammation markers in blood spot vs. vein blood samples
This trial compares two ways of measuring inflammation in the blood: a finger-prick blood spot and a standard blood draw. It may be a good fit if you are getting a seasonal vaccine or have a planned event that causes temporary inflammation, like intense exercise or a change in medication.
Montreal, QuebecAges 18 years+ - NCT06477484Recruiting
Blood tests to help screen for Alzheimer's
This study is testing whether blood-based markers can help identify Alzheimer's disease earlier. It is for people with Alzheimer's, mild memory problems, or no memory issues at all.
Beijing, Beijing MunicipalityAges 50 years+ - NCT07486401Recruiting
Blood eosinophil-guided asthma care in primary care
This trial tests whether using a blood test (eosinophil count) to guide asthma treatment works better than usual care for people with mild to moderate asthma. If you have asthma and are on step 1-3 treatment, this study could help improve your symptom control.
SingaporeAges 21–65 - NCT05515159Enrolling by invitation
Blood tests during electroconvulsive therapy
This study looks at blood markers (substances in blood) measured during electroconvulsive therapy, to understand how the treatment is working in the body. If you’re already being considered for ECT, you may be asked for blood samples as part of this research.
BergenAges 18 years+ - NCT07031817Recruiting
Using a blood test to better diagnose bipolar disorder
This trial tests a new medical device that uses a blood test to help doctors accurately diagnose bipolar disorder in people who were thought to have major depression. It aims to see if the device can tell the difference and improve treatment choices.
MontpellierAges 18–65 - NCT06636357RecruitingPhase 2
Laughing gas for acute suicidal thoughts
This study tests whether breathing a mixture of nitrous oxide (laughing gas) and oxygen can quickly reduce strong suicidal thoughts. It's for people experiencing a mental health crisis who may need fast relief.
ZurichAges 18–65 - NCT06717243Recruiting
Study on gene markers in lung cancer for treatment resistance
This study looks at genetic markers in two types of lung cancer (small cell and large cell neuroendocrine) to understand why some tumors stop responding to a standard treatment that combines chemotherapy with immunotherapy. If you have one of these cancers and are about to start this treatment, you may be able to join.
New York, New YorkAges 18–85 - NCT07680335Recruiting
Blood test to help diagnose Alzheimer's earlier
This study is testing whether a simple blood test can help doctors diagnose Alzheimer's disease earlier and more accurately. It's for people who are having memory or thinking problems and are visiting a memory clinic.
Amsterdam, North HollandAges 55 years+ - NCT06311435Recruiting
Blood test for long COVID diagnosis
This study is testing a new blood test that looks for specific RNA markers to help diagnose long COVID. If you have new, lasting symptoms after a confirmed COVID-19 infection, this study may help find answers.
Iowa City, IowaAges 18 years+ - NCT06852755Recruiting
Finding markers to track menopause in women
This study looks for biological signs that can help monitor menopause. It may help women understand their menopause transition better.
New Taipei CityAges 20 years+ - NCT07041450Recruiting
Screening for Alzheimer's treatment using digital tests and blood tests
This study is testing whether simple digital memory tests and blood tests can help find people who might qualify for anti-amyloid treatments (medications that target Alzheimer's-related proteins). It aims to make screening easier and faster, without needing a spinal tap or PET scan.
Greenfield Park, QuebecAges 55–90 - NCT06661564Recruiting
Testing tears for Alzheimer's disease diagnosis
This study looks at whether tears can help detect Alzheimer's disease. You will have your tears collected and tested for possible biomarkers.
Tours, FranceAges 18 years+ - NCT05347524Recruiting
Blood test study to detect stomach cancer spread in the belly
This study checks whether a blood liquid biopsy test can detect when stomach cancer has spread to the lining of the abdomen (peritoneal metastasis). It compares people with confirmed belly spread to people whose belly lining tests were negative, using blood samples before/around treatment decisions.
Shanghai, Shanghai MunicipalityAges 18–74 - NCT05852925Recruiting
Self-collecting blood at home to help diagnose health conditions
This study checks whether people can collect their own blood sample using the Tasso+ kit and still get reliable test results. It may help make future diagnostic testing easier by supporting at-home or self-collection of samples.
Atlantis, FloridaAges 13 years+ - NCT07623473Recruiting
Blood test to help identify lung nodules as cancer or benign
This study tests whether a simple blood test can accurately identify whether a lung nodule (small spot) found on imaging is cancer or harmless. If it works, it could help doctors avoid unnecessary procedures and speed up diagnosis.
Gentofte MunicipalityAges Any age - NCT04224064Recruiting
Blood test to help diagnose and predict liposarcoma
This study looks for a new blood test marker that may help doctors diagnose liposarcoma and estimate how it may behave over time. You may be asked for a blood sample and consent, and the study may follow you to see how well the test works.
MontpellierAges 18 years+ - NCT05339451Recruiting
Blood and tissue tests to improve endometriosis diagnosis
This study collects blood and small tissue samples during planned gynecological surgery to better diagnose endometriosis and predict its course. It may help future patients by making diagnoses and outlook more accurate.
Stockholm, HuddingeAges 18–45 - NCT07003477Recruiting
Biomarker study for early stroke type diagnosis
This study uses blood tests to quickly identify the type of stroke in patients arriving at the emergency room. It aims to help doctors choose the best treatment early on.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07415837Recruiting
Studying a molecule in muscle diseases and healthy people
This study looks at a molecule called miR-1 in the blood to see if it can help understand muscle diseases. Researchers will compare levels in people with certain muscle conditions and in healthy volunteers.
Clermont-FerrandAges 2 years+ - NCT05813418Recruiting
Finding blood and other clues for immune side effects
This study looks for early “predictive clues” (often blood or test markers) that can forecast immune-related side effects in people treated with immune checkpoint medicines. The goal is to help doctors recognize who may be more likely to have these side effects while receiving treatment.
Amiens, PicardieAges 18 years+ - NCT07435467Recruiting
Blood tests for brain health in older hospital patients
This trial looks at how blood biomarkers relate to thinking, daily function, and survival in older adults, including those with neurological issues or dementia. It aims to improve understanding and care for hospitalized seniors.
AnconaAges 65 years+ - NCT07100457Recruiting
OR6A2 on immune cells and heart recovery after heart attack
This study looks at a molecule called OR6A2 on certain immune cells (monocytes) in people who have had a heart attack treated with a stent. It aims to see if this molecule is linked to heart recovery and future heart problems.
Nanjing, JiangsuAges 18–90 - NCT07140744Recruiting
Blood test for early Alzheimer's detection in memory clinics
This study looks at whether a new blood test for Alzheimer's-related proteins (p-tau217) can help doctors diagnose memory problems earlier and more accurately. It is for people who have recently noticed cognitive issues but haven't yet been diagnosed or treated.
New York, New YorkAges 50 years+ - NCT07731334Recruiting
Memory problems in non-neurology rehab patients
This study looks at how common mild cognitive impairment and dementia are in people staying in rehabilitation units for heart, lung, or orthopedic problems. It aims to understand memory and thinking issues that may be overlooked in these settings.
Florence, FIAges 45 years+
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Common questions
- Are there clinical trials for biomarkers / blood?
- Yes. Clin2 currently lists 215 recruiting biomarkers / blood 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 biomarkers / blood 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 biomarkers / blood 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.