Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Healthy volunteers wanted: your samples could unlock disease mysteries

NCT ID NCT00090662

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Sep 17, 2026 · Updated 9 times

Summary

This study collects blood, urine, stool, and other samples from up to 150 healthy volunteers aged 18 to 85. Researchers will use these samples to compare with samples from patients who have too many eosinophils (a type of white blood cell), which can cause disease. The goal is to better understand these conditions, not to test a treatment. Volunteers are paid for their participation.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 250 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2004

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Healthy volunteers.

Ages

18 to 85 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* Eligibility criteria for volunteer whole blood donation are based on the Standards of the AABB and the Code of Federal Regulation 21 CFR 640. Specific criteria follow: INCLUSION CRITERIA (blood, urine, stool, infrared thermograpy, photography, gastrointestinal secretion, pulmonary function testing and/or sputum donation) * ability to sign informed consent * healthy male or female * 18-85 years of age EXCLUSION CRITERIA (blood, urine, stool, infrared thermograpy, photography, gastrointestinal secretion, pulmonary function testing and/or sputum donation) * pregnancy * weight \<110 pounds * history of heart, lung, kidney disease, chronic anemia or bleeding disorders Eligibility for tissue biopsy donation (other than skin) will be determined by the protocol under which the procedure is performed and the physician performing the procedure. Eligibility criteria for volunteer bone marrow, skin and cerebrospinal fluid donation are more stringent than those for other specimen donations to minimize risk of procedure complications and maximize utility of specimens for study: INCLUSION CRITERIA (bone marrow, cerebrospinal fluid and/or skin donation) * ability to sign informed consent * healthy male or female * 18-65 years of age * willingness to provide concurrent blood sample EXCLUSION CRITERIA (bone marrow, cerebrospinal fluid and/or skin donation) * a known bleeding disorder, low platelets (\<100k) or taking medications that interfere with blood clotting, such as aspirin, non-steroidal anti-inflammatory agents or warfarin * anemia (hemoglobin less than 12.3 mg/dL) * evidence of an immune deficiency, such as HIV infection or cancer * pregnancy * taking a medication that affects the immune response within the past month, including oral, intravenous, or injectable steroids * allergic to xylocaine * have taken an investigational drug in the last 6 months * any other medical condition that the investigator feels puts the participant at too high a risk for participation * warfarin and/or heparin treatment will not be stopped so that a subject can participate in this protocol. If warfarin or heparin was recently discontinued, a subject can be enrolled, but no bone marrow procedures will be performed until the PT is \< 15.5 seconds and the PTT is within normal range. For other agents that interfere with blood clotting without prolonging the PT, a 7-day washout period will be required before bone marrow sampling, skin biopsy or lumbar puncture. Additional exclusion criteria (cerebrospinal fluid) -Previous diagnosis of central nervous system pathology (including tumors, inflammatory conditions, infection, seizure disorder, spina bifida) * History of spinal surgery with hardware placement * History of any spinal surgery or injections of the lumbosacral spine * Headache on the day of donation Additional exclusion criteria (skin biopsy) -History of keloid or abnormal scar formation

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Healthy volunteer are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.