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Showing 1–24 of 44 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Treponema Pallidum Clear all
Recruiting Not applicable Interventional

Offering Routine and Rapid Point of Care (POC) Syphilis Testing in Pregnant Patients Presenting to the Emergency Department

NCT06645106
View directory record Official record
Conditions
Syphilis
Interventions
Rapid Point of Care (POC) Syphilis testing
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional

A Pilot Study Evaluating Penicillin G and Ceftriaxone as Therapies for Presumed Neurosyphilis in HIV Seropositive Individuals

NCT00000648
View directory record Official record
Conditions
HIV Infections, Neurosyphilis
Interventions
Penicillin G potassium, Ceftriaxone sodium
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1996
U.S. locations
42
States / cities
Birmingham, Alabama • San Diego, California • San Francisco, California + 23 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2021 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Rapid HIV, Hep C, and Syphilis Screening in a Rural Street Medicine Clinic

NCT07317687
View directory record Official record
Conditions
HIV Testing, HEPATITIS C (HCV), Syphilis, Hepatitis B Virus (HBV)
Interventions
Rapid Fingerstick Test, Blood Draw for lab test
Diagnostic Test
Lead sponsor
West Virginia University
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Harpers Ferry, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Not applicable Interventional

Modernizing Perinatal Syphilis Testing

NCT06082453
View directory record Official record
Conditions
Syphilis
Interventions
Quantitative polymerase chain reaction (qPCR) assay for detection of Treponema pallidum, Aptima Treponema pallidum transcription-mediated amplification (TMA) assay for detection of Treponema pallidum, Center for Disease Control (CDC) Sexually Transmitted Infections (STI) 2021 Treatment Guidelines for diagnosis of syphilis
Diagnostic Test · Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
Up to 45 Years
Enrollment
924 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
9
States / cities
Los Angeles, California • Baltimore, Maryland • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2025 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Phase 4 Interventional Results available

Phase 4 Comparative Trial of Benzathine Penicillin G for Treatment of Early Syphilis in Subjects With or Without HIV Infection

NCT03637660
View directory record Official record
Conditions
Syphilis
Interventions
Benzathine Penicillin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
249 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
10
States / cities
Birmingham, Alabama • Atlanta, Georgia • Indianapolis, Indiana + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Phase 2 Interventional

Daily Doxycycline for Early Syphillis

NCT06683638
View directory record Official record
Conditions
Syphilis
Interventions
Doxycycline 200mg daily for 14 days
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 24, 2025 · Synced Sep 15, 2026, 7:58 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Evaluation of the Performance of Chembio's DPP(R) Syphilis Screen & Confirm Rapid Test System

NCT01543295
View directory record Official record
Conditions
Syphilis
Interventions
Not listed
Lead sponsor
Chembio Diagnostic Systems, Inc.
Industry
Eligibility
13 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
3
States / cities
Los Angeles, California • Fort Lauderdale, Florida • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 28, 2015 · Synced Sep 15, 2026, 7:58 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

300 Antibody Diagnostic Test Kit

NCT01646411
View directory record Official record
Conditions
Acute Bacterial Infections, Acute Viral Infections
Interventions
Not listed
Lead sponsor
The Plasma Source
Industry
Eligibility
18 Years to 70 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Southampton, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 19, 2012 · Synced Sep 15, 2026, 7:58 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Syph-Check Syphilis Antibody Point of Care (POC) Test

NCT00732355
View directory record Official record
Conditions
Screening for Syphilis Infections
Interventions
Syph-Check POC
Device
Lead sponsor
Healthcare Providers Direct, Inc.
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 1, 2016 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Phase 2 Interventional

Vasodilator and Exercise Study for DMD (VASO-REx)

NCT06290713
View directory record Official record
Conditions
Duchenne Muscular Dystrophy, Duchenne Disease, Muscular Dystrophy, Muscular Dystrophy in Children, Vasodilation, Exercise, DMD
Interventions
Tadalafil, Placebo, Exercise Training
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
6 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

HIV and Genital Herpes Among High-Risk Men Who Have Sex With Men (MSM) in Lima, Peru

NCT00023582
View directory record Official record
Conditions
HIV Infections, Herpes Genitalis, HIV Seronegativity, Syphilis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older · Male only
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 7, 2008 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

STI/HIV Intervention Behavioral Intervention Program

NCT04547413
View directory record Official record
Conditions
Sexually Transmitted Infections
Interventions
STI/HIV Intervention Behavioral Intervention Program
Behavioral
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 30 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
Fayetteville, North Carolina • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Sep 15, 2026, 7:58 AM EDT
Completed No phase listed Observational

NOWDx Test for the Diagnosis of Syphilis

NCT05063344
View directory record Official record
Conditions
Syphilis Infection, Treponema Pallidum Infection
Interventions
Diagnostic Test: NOWDx Syphilis Test
Device
Lead sponsor
NOWDiagnostics, Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
1,535 participants
Timeline
2021 – 2023
U.S. locations
6
States / cities
Tempe, Arizona • Los Angeles, California • North Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Behavioral Science Aspects of Rapid Test Acceptance

NCT01317784
View directory record Official record
Conditions
HIV, Hepatitis C, Hepatitis B, Syphilis
Interventions
Rapid tests for HIV, HCV, HBV, and syphilis, HIV/HCV, HIV/syphilis, HIV only
Device
Lead sponsor
California State University, Long Beach
Other
Eligibility
18 Years and older
Enrollment
1,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Long Beach, California
Source: ClinicalTrials.gov public record
Updated Jul 28, 2015 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Seek, Test, and Treat Intervention to Reduce Chlamydia Trachomatis Disparities

NCT06428643
View directory record Official record
Conditions
Chlamydia, Gonorrhea, Hiv, Syphilis
Interventions
Chlamydia, gonorrhea, syphilis, and HIV screening
Other
Lead sponsor
Tulane University
Other
Eligibility
15 Years to 26 Years
Enrollment
2,322 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Azithromycin/Bicillin Syphilis

NCT00031499
View directory record Official record
Conditions
Syphilis
Interventions
Azithromycin, Benzathine Penicillin, Doxycycline
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 55 Years
Enrollment
593 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2009
U.S. locations
7
States / cities
Birmingham, Alabama • Indianapolis, Indiana • New Orleans, Louisiana + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2013 · Synced Sep 15, 2026, 7:58 AM EDT
Withdrawn Not applicable Interventional

Point-Of-Care Testing for Congenital Syphilis in Mothers and Newborns

NCT03814096
View directory record Official record
Conditions
Maternal Syphilis During Pregnancy - Baby Not Yet Delivered, Congenital Syphilis
Interventions
Syphilis Health Check POC-test (Diagnostics Direct LLC, NJ)
Diagnostic Test
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
2
States / cities
San Jose, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2019 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Ending the HIV Epidemic Through Point-of-Care Technologies (EHPOC)

NCT04793750
View directory record Official record
Conditions
HIV Infections, Syphilis
Interventions
Cepheid GeneXpert HIV-1 Qual POC HIV VL test, DPP HIV-Syphilis test system, OraQuick
Diagnostic Test
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
3
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Not applicable Interventional

Evaluating VM100 Nutritional Supplement for Improving Quality of Life in Duchenne Muscular Dystrophy Patients

NCT07766980
View directory record Official record
Conditions
Duchenne Muscular Dystrophy, Duchenne Disease, Muscular Dystrophy in Children, DMD, Muscular Dystrophy
Interventions
VM100 Nutritional Supplement
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
6 Years and older · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Improving Maternal and Child Health Through Point-of-care STI Testing

NCT07290439
View directory record Official record
Conditions
Treponema Pallidum Infection, Chlamydia Trachomatis Infection, Neisseria Gonorrheae Infection, Trichomonas Vaginalis Vaginitis, Sexually Transmitted Infection
Interventions
Point-of-care STI tests, Standard of care STI testing
Diagnostic Test
Lead sponsor
Emory University
Other
Eligibility
Female only
Enrollment
756 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preventing Congenital Syphilis

NCT02353117
View directory record Official record
Conditions
Congenital Syphilis
Interventions
Congenital Syphilis Intervention Group
Behavioral
Lead sponsor
Tulane University School of Public Health and Tropical Medicine
Other
Eligibility
13 Years and older · Female only
Enrollment
60,386 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

This Study Evaluates the ALPCO Syphilis-T and Syphilis-NT CLIA Kits for Detecting Syphilis Antibodies in Serum and Plasma. Samples From At-risk, HIV-positive, Pregnant, and Healthy Individuals Will Assess Assay Performance Versus Established Comparator Tests.

NCT07089836
View directory record Official record
Conditions
Treponema Pallidum, Treponema Pallidum Infection, Syphilis Infection, Serum, Plasma, Blooddraw, Sexually Transmitted Infection (STI)
Interventions
ALPCO Syphilis-T, ALPCO Syphilis-NT CLIA Kits
Device
Lead sponsor
American Laboratory Products Company
Industry
Eligibility
13 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
6
States / cities
Lancaster, California • Los Angeles, California • North Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Completed Not applicable Interventional Results available

Spotting Syphilis: A Dual Point-of-Care Syphilis Screening Initiative in a Low-Resource Healthcare Setting

NCT07498153
View directory record Official record
Conditions
Syphilis, HIV Infections
Interventions
Chembio HIV/Syphilis rapid POC test
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
14 Years to 65 Years · Female only
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 15, 2026, 7:58 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Reversal of Lipid-Induced Insulin Resistance

NCT02193295
View directory record Official record
Conditions
Insulin Resistance, NAFLD
Interventions
Caloric Restriction
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 90 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2034
U.S. locations
2
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 15, 2026, 7:58 AM EDT