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Rapid Diagnostic Assay for Gonorrhea and Chlamydia

Impact of a Rapid Test for Gonorrhea and Chlamydia on the Clinical Management of Urethritis and Cervicitis in a Sexual Health Clinic

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05564299
Enrollment
98
Registered
2022-10-03
Start date
2023-03-22
Completion date
2024-06-30
Last updated
2025-09-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cervicitis, Sexually Transmitted Infections, Urethritis

Brief summary

This study is a pilot randomized controlled trial evaluating the use of either a) rapid 30-minute desktop assay or b) point-of-care gram stain (current standard of care) to guide the clinical management of patients with symptomatic urethritis or cervicitis evaluated in the Massachusetts General Hospital Sexual Health Clinic. Patients presenting with symptoms of urethritis or cervicitis and meeting inclusion criteria will be randomized to have diagnostic specimens tested during the clinical encounter using either the 30-minute desktop assay or point-of-care gram stain. Patients randomized to the intervention arm of the study will also have a gram stain created, which will be held for interpretation by the clinician following the clinical encounter. Patients will not be followed longitudinally. Recruitment will conclude when 100 participants enroll in the study.

Interventions

DIAGNOSTIC_TESTRapid 30-minute Desktop Assay

Participants will undergo routine evaluation and specimen collection per current clinic protocols. Specimens will be processed by the rapid 30-minute desktop assay. Concurrently, specimens will be used to create a point-of-care gram stain, to be read by the clinician following the clinical encounter. Treatment for urethritis and cervicitis will be provided based on results from the 30-minute assay. Specimens will also be plated for Gonorrhea culture and sent to the Massachusetts Department of Public Health for additional Gonorrhea and Chlamydia polymerase chain reaction testing, as per clinic protocols.

Sponsors

American Sexually Transmitted Diseases Association
CollaboratorUNKNOWN
Massachusetts General Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* 18 years of age and older * Presenting with symptoms of acute urethritis or cervicitis * Willing to provide urine or additional vaginal swab specimen

Exclusion criteria

* Younger than 18 years old * Presenting with symptoms not consistent with urethritis or cervicitis * Unwilling or unable to provide urine or vaginal swab specimen * Pregnant * Contact of index patients with Gonorrhea or Chlamydia * Known exposure to Gonorrhea or Chlamydia * Reporting concurrent symptoms at a non-genital site * Suspected or confirmed to have Monkeypox

Design outcomes

Primary

MeasureTime frameDescription
Mean Antibiotic Days of Therapy (DOT) Administered Per Patient With Symptomatic Urethritis or CervicitisDay 1The investigators will compare the mean antibiotic days of therapy (DOT) administered per patient at the time of initial ciinical visit when evaluated with either point-of-care gram stain or rapid 30-minute desktop test.

Secondary

MeasureTime frameDescription
Participant Visit DurationDay 1The investigators will compare visit duration between participants randomized to the point-of-care test and those to the 30-minute desktop test. Participant visit duration will be calculated as the difference between when the participant enters the exam room and when they check out of the clinic, in minutes.
Sample Processing TimeDay 1The investigators will compare the time taken to process clinical specimen using either the point-of-care gram stain or rapid 30-minute desktop test. The provider processing the samples will record the start and end times on a time sheet, and the sample processing time will be calculated as the difference between those entries, in minutes.
Time to ResultDay 1The investigators will compare time from specimen collection to availability of test result between the point-of-care gram stain or rapid 30-minute desktop test. Providers will record time of specimen collection and time of result (for point of care gram stain), time of result for the rapid desktop platform will be extracted from the platform; time to result will be calculated as the difference between those times, in minutes.
Diagnosis-concordant Antibiotic Use for GonorrheaDay 1Proportion of participants in each arm who were prescribed an antibiotic with activity against gonorrhea on the day of clinic visit, either for a positive test result or for a clinical syndrome for which the antibiotics are indicated (e.g., a clinical diagnosis of pelvic inflammatory disease, a diagnosis of non-gonococcal urethritis) as determined by study PI; or who were not prescribed an antibiotic with activity against gonorrhea on the day of clinic visit in the absence of a positive test result for gonorrhea or clinical syndrome for which the antibiotics are indicated.
Proportion of Participants With Invalid or Unavailable Point of Care Gram Stain or Rapid STI Test ResultsDay 1The proportion of point of care gram stain results (control arm) or rapid test results (intervention arm) that were unavailable or invalid (unable to be read or provided an error message) at the time of the clinic visit.
Test-concordant Antibiotic Use for GonorrheaDay 1Proportion of participants in each arm who recevied gonorrhea-active antibiotics if PCR-based testing (rapid test or MDPH) was positive for gonorrhea, or who did not receive gonorrhea-active antibiotics if PCR-based testing (rapid test or MDPH) was negative for gonorrhea

Other

MeasureTime frameDescription
Clinic Provider Perspectives on Rapid STI Testingat study completion: 12 monthsClinic provider perspectives will be elicited during a focus group discussion at the conclusion of the clinical study.

Countries

United States

Participant flow

Participants by arm

ArmCount
Standard of Care
Point-of-care gram stain
49
Rapid STI Test
Rapid 30-minute Desktop Assay: Participants will undergo routine evaluation and specimen collection per current clinic protocols. Specimens will be processed by the rapid 30-minute desktop assay. Concurrently, specimens will be used to create a point-of-care gram stain, to be read by the clinician following the clinical encounter. Treatment for urethritis and cervicitis will be provided based on results from the 30-minute assay. Specimens will also be plated for Gonorrhea culture and sent to the Massachusetts Department of Public Health for additional Gonorrhea and Chlamydia polymerase chain reaction testing, as per clinic protocols.
49
Total98

Baseline characteristics

CharacteristicStandard of CareRapid STI TestTotal
Age, Continuous28 years31 years29.5 years
Ethnicity (NIH/OMB)
Hispanic or Latino
10 Participants7 Participants17 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
30 Participants35 Participants65 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
9 Participants7 Participants16 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants5 Participants7 Participants
Race (NIH/OMB)
Black or African American
8 Participants12 Participants20 Participants
Race (NIH/OMB)
More than one race
1 Participants3 Participants4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
12 Participants11 Participants23 Participants
Race (NIH/OMB)
White
26 Participants18 Participants44 Participants
Sex/Gender, Customized
Cisgender female
13 Participants19 Participants32 Participants
Sex/Gender, Customized
Cisgender male
34 Participants28 Participants62 Participants
Sex/Gender, Customized
Other
1 Participants0 Participants1 Participants
Sex/Gender, Customized
Transgender/nonbinary
1 Participants2 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 490 / 49
other
Total, other adverse events
0 / 490 / 49
serious
Total, serious adverse events
0 / 490 / 49

Outcome results

Primary

Mean Antibiotic Days of Therapy (DOT) Administered Per Patient With Symptomatic Urethritis or Cervicitis

The investigators will compare the mean antibiotic days of therapy (DOT) administered per patient at the time of initial ciinical visit when evaluated with either point-of-care gram stain or rapid 30-minute desktop test.

Time frame: Day 1

ArmMeasureValue (MEDIAN)
Standard of CareMean Antibiotic Days of Therapy (DOT) Administered Per Patient With Symptomatic Urethritis or Cervicitis7 Antibiotic days of therapy (DOT)
Rapid STI TestMean Antibiotic Days of Therapy (DOT) Administered Per Patient With Symptomatic Urethritis or Cervicitis1 Antibiotic days of therapy (DOT)
Comparison: Wilcoxon rank sum testp-value: 0.053Wilcoxon (Mann-Whitney)
Secondary

Diagnosis-concordant Antibiotic Use for Gonorrhea

Proportion of participants in each arm who were prescribed an antibiotic with activity against gonorrhea on the day of clinic visit, either for a positive test result or for a clinical syndrome for which the antibiotics are indicated (e.g., a clinical diagnosis of pelvic inflammatory disease, a diagnosis of non-gonococcal urethritis) as determined by study PI; or who were not prescribed an antibiotic with activity against gonorrhea on the day of clinic visit in the absence of a positive test result for gonorrhea or clinical syndrome for which the antibiotics are indicated.

Time frame: Day 1

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareDiagnosis-concordant Antibiotic Use for Gonorrhea43 Participants
Rapid STI TestDiagnosis-concordant Antibiotic Use for Gonorrhea48 Participants
Secondary

Participant Visit Duration

The investigators will compare visit duration between participants randomized to the point-of-care test and those to the 30-minute desktop test. Participant visit duration will be calculated as the difference between when the participant enters the exam room and when they check out of the clinic, in minutes.

Time frame: Day 1

ArmMeasureValue (MEDIAN)
Standard of CareParticipant Visit Duration57 Minutes
Rapid STI TestParticipant Visit Duration87 Minutes
Secondary

Proportion of Participants With Invalid or Unavailable Point of Care Gram Stain or Rapid STI Test Results

The proportion of point of care gram stain results (control arm) or rapid test results (intervention arm) that were unavailable or invalid (unable to be read or provided an error message) at the time of the clinic visit.

Time frame: Day 1

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareProportion of Participants With Invalid or Unavailable Point of Care Gram Stain or Rapid STI Test Results4 Participants
Rapid STI TestProportion of Participants With Invalid or Unavailable Point of Care Gram Stain or Rapid STI Test Results0 Participants
Secondary

Sample Processing Time

The investigators will compare the time taken to process clinical specimen using either the point-of-care gram stain or rapid 30-minute desktop test. The provider processing the samples will record the start and end times on a time sheet, and the sample processing time will be calculated as the difference between those entries, in minutes.

Time frame: Day 1

Population: This outcome measure was not collected. At the start of the study, it was determined that staff would not be able to accurately document the sample processing time in the clinical context, as stopping between sample processing and running or reading the test was not feasible and disrupted the providers' workflow, thus potentially altering the outcomes of other process measures. This change was made after the start of the study but not amended specifically in the protocol.

Secondary

Test-concordant Antibiotic Use for Gonorrhea

Proportion of participants in each arm who recevied gonorrhea-active antibiotics if PCR-based testing (rapid test or MDPH) was positive for gonorrhea, or who did not receive gonorrhea-active antibiotics if PCR-based testing (rapid test or MDPH) was negative for gonorrhea

Time frame: Day 1

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of CareTest-concordant Antibiotic Use for Gonorrhea41 Participants
Rapid STI TestTest-concordant Antibiotic Use for Gonorrhea46 Participants
Secondary

Time to Result

The investigators will compare time from specimen collection to availability of test result between the point-of-care gram stain or rapid 30-minute desktop test. Providers will record time of specimen collection and time of result (for point of care gram stain), time of result for the rapid desktop platform will be extracted from the platform; time to result will be calculated as the difference between those times, in minutes.

Time frame: Day 1

ArmMeasureValue (MEDIAN)
Standard of CareTime to Result6.5 Minutes
Rapid STI TestTime to Result34 Minutes
Other Pre-specified

Clinic Provider Perspectives on Rapid STI Testing

Clinic provider perspectives will be elicited during a focus group discussion at the conclusion of the clinical study.

Time frame: at study completion: 12 months

Source: ClinicalTrials.gov · Data processed: Apr 23, 2026