Clinical trialNCT02969850CompletedInterventional

A New Paradigm for Vitamin D Sufficiency

SponsorNYU Langone HealthEnrollment444New Biomarkers for Measuring Vitamin D Level

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

Although the African-American (AA) population tends to have lower serum 25(OH)D levels compared to whites, there is no evidence that the lower 25(OH)D levels in African-Americans are harmful. In fact, skeletal health is superior in AA. It is clear that total serum 25(OH)D concentrations do not reflect the same risk/benefit ratio in AA compared to white women and is, therefore, an inappropriate biomarker in this population. The investigators wish to investigate whether free 25(OD)D and Vitamin D Metabolite Ratio (VMR, ratio of 25(OH)D to 24,25(OH)2D) are preferable biomarkers to total 25(OH)D. The investigators propose a six month randomized double blinded study.

clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

John Aloia, MD
Winthrop University Hospital
Principal Investigator
clinicaltrials.gov ↗
Mageda Mikhail, MD
Winthrop University Hospital
Study Director
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Winthrop University Hospital
Mineola, New York, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 29 Feb 2016
Primary completion: 1 Dec 2019
Completion: 1 Dec 2019
Last update posted: 22 Oct 2021
Registered enrollment: 444
Registry id: NCT02969850

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 30 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.