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Genotypic Versus Phenotypic Susceptibility Testing of Positive Blood Cultures

Randomized Trial of Fast Bacterial Identification and Phenotypic Antimicrobial Susceptibility Testing in Patients With Positive Blood Cultures Using the Accelerate PhenoTest™ BC Kit, Performed on the Accelerate Pheno™ System as Compared With the Verigene® BC-GP/GN

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03744728
Enrollment
774
Registered
2018-11-16
Start date
2019-05-23
Completion date
2023-06-30
Last updated
2022-04-22

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

Conditions

Bloodstream Infection

Brief summary

This study is designed as a prospective, randomized, open-label trial evaluating antimicrobial utilization, clinical outcomes, and healthcare costs among patients with positive blood cultures. Patients will be randomized to one of the following FDA-cleared devices that will be used to assess the workflow impact of fast identification (ID) and antimicrobial susceptibility testing (AST) in the microbiology lab and in the quality of care in patients: 1) Standard culture and AST of positive blood culture bottles plus the Verigene® Blood Culture Gram-positive/Gram-negative kit (BC-GP/GN); or 2) Fast ID and AST of positive blood culture bottles using the Accelerate PhenoTest™ BC kit with the Accelerate Pheno™ System.

Interventions

The Accelerate PhenoTest™ BC kit with the Accelerate Pheno™ System is a fully-integrated in vitro diagnostic system. It is FDA-cleared to perform ID of bacteria and yeast in less than 90 minutes and AST in less than 7 hours, on average, directly from positive blood culture

DIAGNOSTIC_TESTStandard of Care

Standard culture and AST of positive blood culture bottles plus the Verigene® BC-GP/GN

Sponsors

Accelerate Diagnostics, Inc.
Lead SponsorINDUSTRY

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

* All positive blood cultures (including on-panel/off-panel/contaminants) identified during local laboratory business hours * All adult (≥18 years of age)

Exclusion criteria

* Identification of blood culture positivity outside of local laboratory business hours (e.g. whenever laboratories are staffed to perform both rapid testing and routine testing) * Positive blood culture in the prior week with same Gram stain result * Transferred from an outside hospital and had a history of a previously positive blood culture of the same Gram stain result * Previously enrolled in the study * Only the first positive culture for each patient will be included during the study period; any subsequent episode of bloodstream infection (BSI) will be excluded * Died or were transitioned to comfort care within 24 hours of enrollment * Negative Gram-stain * Not admitted to hospital for ≥ 24 hours following blood culture positivity

Design outcomes

Primary

MeasureTime frameDescription
Duration of anti-pseudomonal β-lactam therapy4 days after randomizationMean duration of anti-pseudomonal β-lactam therapy
Duration of anti-methicillin-resistant Staphylococcus aureus (MRSA) therapy4 days after randomizationMean duration of MRSA therapy

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026