# Measurement of the Free Fraction of 25-hydroxyvitamin D in Serum

> **NCT01771380** · — · COMPLETED · sponsor: **University of Tromso** · enrollment: 78 (actual)

## Conditions studied

- Impaired Glucose Tolerance

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01771380
- **Lead sponsor:** University of Tromso
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2013-02
- **Primary completion:** 2015-06
- **Final completion:** 2015-08
- **Target enrollment:** 78 (ACTUAL)
- **Last updated:** 2015-09-22


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01771380

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01771380, "Measurement of the Free Fraction of 25-hydroxyvitamin D in Serum". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT01771380. Licensed CC0.

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