Collection of Samples USOPTIVAL Study
Public ClinicalTrials.gov record NCT04792684. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Collection of Samples From the United States Population for Optimization and Evaluation of Colorectal Cancer (CRC) Plasma Circulating Free-DNA (cfDNA) Marker Panel Performance ("USOPTIVAL")
Study identification
- NCT ID
- NCT04792684
- Recruitment status
- Recruiting
- Study type
- Observational
- Phase
- Not listed
- Lead sponsor
- Universal Diagnostics
- Industry
- Enrollment
- 1,300 participants
Conditions and interventions
Conditions
Interventions
- Optimization of Plasma Circulating Free-DNA (cfDNA) Marker Panel Diagnostic Test
Diagnostic Test
Eligibility (public fields only)
- Age range
- 45 Years to 84 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 29, 2020
- Primary completion
- Dec 29, 2025
- Completion
- Dec 29, 2025
- Last update posted
- Nov 9, 2025
2020 – 2025
United States locations
- U.S. sites
- 16
- U.S. states
- 10
- U.S. cities
- 14
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Precision Recearch Institute | Chula Vista | California | 91910 | Completed |
| Precision Research Institute | San Diego | California | 92114 | Completed |
| Medical Associates Research Group | San Diego | California | 92123 | Completed |
| Clinical Research of California | Walnut Creek | California | 94598 | Completed |
| Center for Gastrointestinal Disorders | Hollywood | Florida | 33021 | Completed |
| Lakeland Regional Cancer Center | Lakeland | Florida | 33805 | Recruiting |
| Springfield Clinic | Springfield | Illinois | 62702 | Recruiting |
| Ochsner Clinic | New Orleans | Louisiana | 70121 | Completed |
| Dana Farber Cancer Institute | Boston | Massachusetts | 02215 | Completed |
| Mid Hudson Medical Research | New Windsor | New York | 12553 | Recruiting |
| University of Pennsylvania | Philadelphia | Pennsylvania | 19104 | Recruiting |
| Fox Chase Cancer Center | Philadelphia | Pennsylvania | 19111 | Completed |
| Frontier Clinical Research | Uniontown | Pennsylvania | 15401 | Completed |
| Clinical Trials Network | Union City | Tennessee | 38261 | Completed |
| Vilo Research Group | Houston | Texas | 77017 | Completed |
| Gastroenterology Consultants of SW Virginia | Raonoke | Virginia | 24014 | Completed |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04792684, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 9, 2025 · Synced Jun 25, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04792684 live on ClinicalTrials.gov.