Clinical trial Recruiting at 1 site Observational Ages 18 and up

Comparing ways to track meals for people with stage 4–5 CKD (pre-dialysis)

Official title: The CPH-MBD Cohort - Substudy on Dietary History

Run by University of Copenhagen · NCT07312981 · Data updated 2026-11-12

This project will test whether taking photos of everything you eat (and optionally weighing food for three days) gives accurate calcium and phosphorus balance measurements for adults with stage 4–5 CKD who are not yet on dialysis.

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Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment50 (estimated)
SponsorUniversity of Copenhagen
Academic / other
Locations2 sites (Herlev, Capital Region and 1 other locations)
StatusRecruiting
StartedDecember 15, 2025
Main results expectedMay 15, 2026
Study endsMay 15, 2029
Registry record updatedDecember 31, 2025
Trial IDNCT07312981 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older with CKD stage 4 or 5 (estimated GFR <30 mL/min/1.73 m2) who are not yet on dialysis.

Probably not a fit

People on dialysis, those with milder CKD (eGFR ≥30 mL/min/1.73 m2), or anyone unable to reliably photograph or weigh their food are unlikely to benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults with CKD stage 4–5 will be asked to photograph all food and drink consumed over 24 hours and offered the option to weigh foods and fluids for three days. Dietary intake from photos and weighed records will be compared with urinary excretion to calculate calcium and phosphorus balance relative to creatinine clearance. The study compares image-based dietary assessment methods with weighed records in a pre-dialysis CKD cohort. It is an observational substudy carried out at Herlev Hospital as part of the CPH-MBD cohort.

Why it matters

Potential benefit: If successful, simpler photo-based diet tracking could make it easier to monitor and manage calcium and phosphorus balance in people with advanced CKD.

How similar studies have gone: Photo-based dietary assessment has shown promise in other populations while weighed food records are a common reference standard, but their comparison has been less studied specifically in advanced CKD.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* A glomerular filtration rate of \<30 ml ml/min/1.73m2
* 18 years and above

Exclusion Criteria:

None

Where it's running

  • Herlev Hospital, Dept Nephrology
    Herlev, Denmark
    Recruiting
  • Copenhagen University Hospital - Herlev
    Herlev, Capital Region, Denmark
    Active not recruiting

Study contacts

  • Principal investigator: Jens Rikardt Andersen, MD, MPA, Assoc Prof — University of Copenhagen
  • Study coordinator: Jens Rikardt Andersen, MD, MPA
  • Email: jra@nexs.ku.dk
  • Phone: 004523346654

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.