# Portable Measurement of Protoporphyrin IX in the Skin

> **NCT04223570** · — · COMPLETED · sponsor: **Dartmouth-Hitchcock Medical Center** · enrollment: 219 (actual)

## Conditions studied

- Photodynamic Therapy
- Protoporphyrin IX

## Interventions

- **DEVICE:** Portable Apple Smart Phone Protoporphyrin IX Spectrometer Camera

## Key facts

- **NCT ID:** NCT04223570
- **Lead sponsor:** Dartmouth-Hitchcock Medical Center
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2022-12-01
- **Primary completion:** 2025-05-20
- **Final completion:** 2025-05-20
- **Target enrollment:** 219 (ACTUAL)
- **Last updated:** 2025-11-21


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04223570

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04223570, "Portable Measurement of Protoporphyrin IX in the Skin". Retrieved via AI Analytics 2026-06-16 from https://api.ai-analytics.org/clinical/NCT04223570. Licensed CC0.

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