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NCT07211997Recruiting

FebriDx® Pediatric Validation Study

Lumos Diagnostics

Start Date

10/9/2025

Completion Date

5/30/2027

Summary

The primary objective of this study is to determine performance characteristics of the FebriDx® test in differentiating bacterial from non-bacterial etiology among febrile pediatric patients (2-11 years) presenting to the emergency department, urgent care center or primary care office with a suspected acute respiratory tract infection.

Detailed Description

This is a prospective, multi-center, observational, blinded study where children with suspected acute respiratory infection will undergo FebriDx® testing. The primary outcome is the presence of a bacterial associated systemic host immune response related to a febrile acute respiratory tract infection, as compared to the reference standard of clinical adjudication as determined by a panel of pediatric experts using the Clinical Reference Algorithm that includes pathogen detection testing (e.g., bacterial culture, multiplex PCR) as well as measures of host immune response. FebriDx is a rapid lateral flow immunoassay for the visual, qualitative, in vitro detection of elevated levels of host response proteins, Myxovirus resistance protein A (MxA) and C-reactive protein (CRP), directly from fingerstick blood.

Eligibility Criteria

Age Range: 2 years to 11 years

Inclusion Criteria: * Signed informed consent by parent/guardian and Assent for ages 7-11 years * Exhibit or report of a new onset measured temperature (oral or tympanic) of greater than or equal to 100.4°F/38°C within 3 days (72 hours) of enrollment * Clinical suspicion for Acute Respiratory Infection beginning within 7 days before enrollment AND presents with at least one of the following new onset of symptoms: runny nose, nasal congestion, sore throat, cough, hoarse voice, shortness of breath / difficulty breathing Exclusion Criteria: * Unwilling to participate in 7-day follow-up or sign HIPAA waiver to obtain medical record if hospitalized * Immunocompromised state or taking immunosuppressive or chemotherapeutic medications in the last 30 days (e.g. oral / inhaled steroids, Methotrexate, Cyclosporine, Chemotherapy, interferon therapy) * Taking antibiotics or antiviral therapy in the last 14 days * Received a live viral immunization in the last 14 days * Clinical diagnosis of otitis media or recognizable viral syndrome (i.e., croup, varicella, stomatitis) at the time of enrollment * Prior enrollment in the study

Interventions

DEVICE

FebriDx

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Conditions

Acute Respiratory Infections (ARIs)

Locations

Avacare

Colton, California 92324

United States

PAS Research- Myrtle Avenue Pediatrics, Inc

Clearwater, Florida 33756

United States

PAS Research- Sandhill Pediatrics PA

Lutz, Florida 33549

United States

PAS Research

Tampa, Florida 33613

United States

Hometown Urgent Care

Huber Heights, Ohio 45424

United States

Hometown Urgent Care

Springfield, Ohio 45504

United States

PAS Research

Pittsburgh, Pennsylvania 15227

United States

Tribe

Charleston, South Carolina 29407

United States

Tribe- Parkside Pediatrics

Greenville, South Carolina 29607

United States

PAS Research

Edinburg, Texas 78539

United States