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NCT00643578 · ClinicalTrials.gov registry record · NA
Dose-response of Inhaled Formoterol Using Methacholine Challenge as a Bioassay
A NA study, sponsored by University of Florida.
- Completed
- Registry status
- NA
- Development phase
- 37
- Enrollment target
NCT00643578: Completed NA study, sponsored by University of Florida.
NCT00643578 is a NA study that has completed, run by University of Florida. The registered enrollment target is 37 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (97% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00643578, a NA study, has completed, sponsored by University of Florida.
- COMPLETED
- Registry status
- NA
- Development phase
- 37 participants
- Enrollment target
Study Summary
The purpose of this study is to find out whether a difference between two doses of formoterol can be detected by methacholine challenge.
Primary Outcome
The PC20 is the provocational dose of methacholine causing a 20% drop in forced expiratory volume in the first second.
Interventions
- DRUG formoterol
- DEVICE Dry Powder Inhaler (Twisthaler)
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 37 participants |
| Start Date | 2008-03 |
| Est. Completion | 2009-01 |
| Phase | NA |
What the finished NCT00643578 record still lists
NCT00643578 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 37 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (97% lower).
The record links to 0 conditions, and to 2 interventions - of which formoterol is the first listed.
NCT00643578 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00643578 about?
NCT00643578 is a clinical study titled "Dose-response of Inhaled Formoterol Using Methacholine Challenge as a Bioassay". The purpose of this study is to find out whether a difference between two doses of formoterol can be detected by methacholine challenge.
What is the current status of trial NCT00643578?
This trial is currently completed. It is a NA study. The enrollment target is 37 participants. The study started on 2008-03. Estimated completion is 2009-01.
What interventions are being tested in trial NCT00643578?
The interventions under investigation include: formoterol (DRUG), Dry Powder Inhaler (Twisthaler) (DEVICE).
Who is sponsoring clinical trial NCT00643578?
This trial is sponsored by University of Florida, which has 1,106 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00643578's enrollment target sits among peer trials
37 1540th of 2000 higher than 460 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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