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Virtual nutrition visits aim to crush kidney stones before they form

NCT ID NCT04634851

Prevention Sponsor: University of California, San Francisco Source: ClinicalTrials.gov ↗

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When the status isn't known

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

Summary

This study tests whether personalized dietary counseling through video visits can help people who have had kidney stones eat less salt. One hundred adults with a history of calcium-based kidney stones will receive either standard advice or virtual home coaching. The goal is to see if the video approach lowers sodium in their urine, which may reduce the chance of forming new stones.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 100 people

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

Expected to start

Jul 2027

An estimate. Start dates often move.

Expected to finish

Jun 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.

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.

Inclusion Criteria: * Patients known to have a history of calcium-based kidney stone disease verified by stone analysis (stones containing calcium oxalate(CaOx) or calcium phosphate(CaP) on stone analysis), or patients with a diagnosis of kidney stone disease verified by imaging (computerized tomography, ultrasound, or plain film/x-ray) and a prior 24-hour urine results with elevated SS CaOx\>8 or SS CaP\>1.25. * Patients 18 years or older. * Patients with a smartphone, internet capable tablet, or video capable laptop. * Patients with a household member with a smartphone, internet capable tablet, or video capable laptop. Exclusion Criteria: * Pregnant patients. * Patients unable to produce a urine sample. * Patients who have previous surgical reconstruction involving incorporation of bowel in the urinary tract. * Patients with known sodium regulation abnormalities (adrenal tumors, pituitary tumors, glucocorticoid deficiency, hypothyroidism, syndrome of inappropriate antidiuretic hormone secretion, nephrotic syndrome, severe congestive heart failure, severe hepatic impairment, etc.). * Patients on medications significantly affecting urinary sodium levels (lithium, amphotericin, vasopressin V2-receptor antagonists, lactulose, for example).

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Conditions

The condition(s) this trial relates to.

Feeding Behavior nephrolithiasis

As listed by the trial registrant

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

Diet habit Technology

How to take part

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  1. The official record

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