Saliva test could guide better pain relief after back surgery
NCT ID NCT06801574
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at three different ways to manage pain after lower back surgery. The goal is to find which method works best and reduces the need for strong painkillers like opioids. Researchers will use a simple saliva test to measure the body's natural pain-fighting response. About 84 adults having elective lumbar fixation surgery will take part.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 84 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2025
- Expected to finish
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Mar 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients scheduled to undergo lumbar fixation surgery under general anesthesia * aged between 18 and 65 years, * American Society of Anesthesiologists physical status classification of I-II Exclusion Criteria: * Patients with a known allergy to local anesthetics. * Patients who used opioid analgesics within 48 hours prior to sample collection. * Patients with a history of smoking or alcohol consumption. * Patients with conditions affecting salivary flow, such as xerostomia or those who have undergone radiotherapy. * Patients with infectious diseases known to be transmissible through saliva. * Patients with an ASA physical status classification of III or higher. * Patients unable to use a patient-controlled analgesia (PCA) device. * Patients who do not consent to the study procedures.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Ataturk University
RECRUITINGErzurum, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.
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