Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Could free vitamin d be a better health marker? new study investigates

NCT ID NCT07268742

Knowledge-focused Sponsor: Universitaire Ziekenhuizen KU Leuven Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how different forms of vitamin D work in the body. Researchers will measure free vitamin D (the active form) in healthy adults, pregnant women, and people with hormone or kidney problems. The goal is to see if free vitamin D gives a more accurate picture of vitamin D status than standard tests.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 930 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2024

Expected to finish

Oct 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

* Healthy controls: community sample * Other cohorts: recruited from UZ Leuven (Academic medical center/tertiairy care center)

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

1. General inclusion Criteria: \- 18 years or above 2. General exclusion Criteria: * Below 18 years of age * Individuals incapable of providing informed consent 3. Cohort inclusion criteria * Obesity: BMI ≥ 25 kg/m2 * Chronic Kidney Disease: ≥ CKD stage 3a (eGFR \< 60 mL/min/1.73m2) * Pregnancy: in trimester 1 of pregnancy * Primary hyperparathyroidism: diagnosis at UZ Leuven and scheduled for parathyroidectomy at UZ Leuven * Complex calcium and phosphate disorders: diagnosis at UZ Leuven 4. Cohort exclusion criteria * Healthy controls: BMI below 18 kg/m² or above 25 kg/m², pregnancy, chronic kidney disease (independent of staging), primary hyperparathyroidism and vitamin D and/or calcium supplementation * Obesity: chronic kidney disease (independent of staging), pregnancy, primary hyperparathyroidism * Chronic Kidney Disease: BMI below 18 kg/m² or above 30 kg/m², pregnancy, primary hyperparathyroidism * Pregnancy: BMI below 18 kg/m² or above 30 kg/m², chronic kidney disease (independent of staging), primary hyperparathyroidism * Primary hyperparathyroidism: BMI below 18 kg/m² or above 30 kg/m², pregnancy, chronic kidney disease (independent of staging), secondary hyperparathyroidism

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Chronic kidney disease are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

chronic kidney disease obesity disorder primary hyperparathyroidism vitamin D deficiency

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Vitamin D Vitamin D and calcium homeostasis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University Hospitals Leuven

    RECRUITING

    Leuven, 3000, Belgium

More trials for these conditions

Other studies related to the condition(s) this trial covers.