# Prevalence of Latent Tuberculosis (TB) Infection Diagnosed by Interferon-gamma Release Assay and Tuberculin Skin Tests in Patients With Old Healed TB

> **NCT01099098** · — · COMPLETED · sponsor: **Seoul National University Hospital** · enrollment: 480 (estimated)

## Conditions studied

- Tuberculosis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01099098
- **Lead sponsor:** Seoul National University Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2010-01
- **Primary completion:** 2011-01
- **Final completion:** 2011-03
- **Target enrollment:** 480 (ESTIMATED)
- **Last updated:** 2011-05-12


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01099098

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01099098, "Prevalence of Latent Tuberculosis (TB) Infection Diagnosed by Interferon-gamma Release Assay and Tuberculin Skin Tests in Patients With Old Healed TB". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01099098. Licensed CC0.

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