# Utility of Lung Clearance Index Score as a Noninvasive Marker of Small Airways Disease

> **NCT03241420** · — · ACTIVE_NOT_RECRUITING · sponsor: **National Jewish Health** · enrollment: 600 (estimated)

## Conditions studied

- Chronic Lung Disease

## Interventions

- **DEVICE:** lung clearance index (LCI)

## Key facts

- **NCT ID:** NCT03241420
- **Lead sponsor:** National Jewish Health
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2017-04-24
- **Primary completion:** 2030-12
- **Final completion:** 2030-12
- **Target enrollment:** 600 (ESTIMATED)
- **Last updated:** 2026-04-15


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03241420

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03241420, "Utility of Lung Clearance Index Score as a Noninvasive Marker of Small Airways Disease". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT03241420. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*