Completed PHASE4 INTERVENTIONAL 2-arm NCT00818467

UVB Light and Sunscreen (Sunscreen)

3% Dihydroxyacetone (DHA or Sunless Tanning Agent) Inhibits Vitamin D Production in the Skin in Response to Ultraviolet Light

Sponsor: Creighton University

Conditions Vitamin D Status

Interventions Tanning spray UVB

Updated 5 times since 2017 Last updated: Nov 27, 2009 Started: May 31, 2008 Primary completion: Feb 28, 2009 Completion: Feb 28, 2009

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A PHASE4 clinical study on Vitamin D Status, this trial is completed. The trial is conducted by Creighton University and has accumulated 5 data snapshots since 2008. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

Change History

5 versions recorded

Sep 2024 — Present [monthly]

Completed PHASE4
Jul 2024 — Sep 2024 [monthly]

Completed PHASE4
Jan 2021 — Jul 2024 [monthly]

Completed PHASE4
Jun 2018 — Jan 2021 [monthly]

Completed PHASE4
Jan 2017 — Jun 2018 [monthly]

Completed PHASE4

First recorded

May 2008

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Creighton University
The UV Foundation

Data source: Creighton University

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Omaha, United States