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Spit test could replace urine checks for cannabis in remote trials

NCT ID NCT06891235

Knowledge-focused Sponsor: Boston Children's Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Sep 16, 2026 · Updated 5 times

Summary

This study is testing whether simple saliva tests done at home can accurately show when someone has not used cannabis. Researchers will enroll 200 people aged 18-30 who use cannabis at least once a week. Participants will provide saliva and urine samples over 3-4 weeks, and researchers will compare the test results with self-reported cannabis use. If the saliva tests work well, they could make it easier to run clinical trials remotely without needing in-person urine tests.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
oral fluid test for THC
What this could lead to
If successful, this could provide a reliable, remote way to confirm cannabis non-use in clinical trials, reducing the need for in-person visits.
What could go wrong
This is an early-stage feasibility study with only 200 participants. The tests may not be accurate enough or easy to use at home, and results may not apply to all cannabis users.

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 200 people

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

Started

Oct 2025

Expected to finish

May 2027

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

Community sample

Ages

18 to 30 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Age 18 to 30 years * Cannabis use on \>=1x/week in the past 30 days * Ownership of a portable device that is capable of videoconference and videorecording (i.e., smartphone, tablet computer, or laptop computer) * Ability to read and speak English * Availability for duration of the study (3-4 weeks). * To proceed to oral fluid testing, positive result for urinary TCH-COOH Exclusion Criteria: • Inability/unwillingness to provide contact information Individuals age 18-30 are invited to screen here: https://redcap.link/softa-bch

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Conditions

The condition(s) this trial relates to.

cannabis dependence

As listed by the trial registrant

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

Cannabis intoxication Cannabis use Cannabis use disorder

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

  • Boston Children's Hospital

    RECRUITING

    Boston, Massachusetts, 02115, United States

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