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NCT00680277 · ClinicalTrials.gov registry record · Phase 1
Vitamin A Value of Spirulina Carotenoids in Humans
A Phase 1 study, sponsored by Tufts University.
- Completed
- Registry status
- Phase 1
- Development phase
- 20
- Enrollment target
NCT00680277: Completed Phase 1 study, sponsored by Tufts University.
NCT00680277 is a Phase 1 study that has completed, run by Tufts University. The registered enrollment target is 20 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00680277, a Phase 1 study, has completed, sponsored by Tufts University.
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 20 participants
- Enrollment target
Study Summary
The goal of this protocol is to determine the vitamin A value (equivalence) of spirulina. The investigation will use intrinsically deuterium labeled spirulina and an isotope vitamin A reference dose, 13C10- retinyl acetate (13C10 RAc), in males (n=20). Up to 45 blood samples (10 ml/sample) will be collected from each subject over a two-month period to evaluate the bioavailability and bioconversion of spirulina ß-carotene to vitamin A.
Interventions
- DIETARY_SUPPLEMENT spirulina ß-carotene
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 20 participants |
| Start Date | 2004-04 |
| Est. Completion | 2008-12-31 |
| Phase | Phase 1 |
What the finished NCT00680277 record still lists
NCT00680277 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 20 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (67% lower).
The record links to 0 conditions, and to 1 intervention - of which spirulina ß-carotene is the first listed.
NCT00680277 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00680277 about?
NCT00680277 is a clinical study titled "Vitamin A Value of Spirulina Carotenoids in Humans". The goal of this protocol is to determine the vitamin A value (equivalence) of spirulina. The investigation will use intrinsically deuterium labeled spirulina and an isotope vitamin A reference dose, 13C10- retinyl acetate (13C10 RAc), in males (n=20). Up to 45 blood samples (10 ml/sample) will be c...
What is the current status of trial NCT00680277?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 20 participants. The study started on 2004-04. Estimated completion is 2008-12-31.
What interventions are being tested in trial NCT00680277?
The interventions under investigation include: spirulina ß-carotene (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT00680277?
This trial is sponsored by Tufts University, which has 163 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00680277's enrollment target sits among peer trials
20 1629th of 2000 higher than 285 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 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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