# Down Syndrome Screening Based on Dried Blood Spots and Cell-free Fetal DNA

> **NCT01837979** · — · UNKNOWN · sponsor: **Peking Union Medical College Hospital** · enrollment: 2000 (estimated)

## Conditions studied

- Trisomy 21

## Interventions

- **PROCEDURE:** cell-free fetal DNA

## Key facts

- **NCT ID:** NCT01837979
- **Lead sponsor:** Peking Union Medical College Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2013-04
- **Primary completion:** 2015-01
- **Final completion:** 2015-01
- **Target enrollment:** 2000 (ESTIMATED)
- **Last updated:** 2013-04-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01837979

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01837979, "Down Syndrome Screening Based on Dried Blood Spots and Cell-free Fetal DNA". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT01837979. Licensed CC0.

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