InstrumentQuantaMatrix

dRAST

Rapid phenotypic AST from positive blood culture

dRAST provides phenotypic, MIC-based antimicrobial susceptibility results directly from positive blood culture, helping clinical teams reach informed antibiotic decisions faster in bloodstream infection.

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Overview

dRAST (Direct & Rapid Antimicrobial Susceptibility Test) from QuantaMatrix is a phenotypic, MIC-based AST system designed for the bloodstream-infection workflow. It performs susceptibility testing directly from a positive blood culture, with the aim of delivering actionable results substantially sooner than conventional culture-based workflows.

In critically ill patients with bloodstream infection and sepsis, timely de-escalation or escalation of antibiotics is important. By shortening the path from positive culture to a phenotypic MIC, dRAST is intended to support earlier optimisation of antimicrobial therapy, in alignment with antimicrobial stewardship goals and patient-centred care.

The platform is built for the realities of a busy microbiology laboratory: no McFarland preparation and minimal sample handling are required, panels are available for both Gram-negative and Gram-positive organisms, and an on-board expert system interprets results against selectable interpretive guidelines. With random-access loading and a low-maintenance design, dRAST is intended to fit a continuous, walk-away workflow.

Applications

Rapid antimicrobial susceptibility testing for bloodstream infectionSupporting earlier antibiotic optimisation in critically ill and septic patientsAntimicrobial stewardship programmes in hospital microbiologyPhenotypic MIC determination for Gram-negative and Gram-positive bacteraemiaReducing time-to-effective therapy in intensive care settingsWorkflow support for clinical microbiology laboratories

Key highlights

Phenotypic, MIC-based AST performed directly from positive blood culture
Designed to shorten time-to-result compared with conventional culture-based AST workflows
No McFarland preparation and minimal sample handling required
Random-access loading to support continuous, on-demand sample processing
On-board expert system with selectable interpretive guidelines
Panels available for both Gram-negative and Gram-positive organisms
Low-maintenance design supporting a walk-away workflow
Intended to support earlier antibiotic optimisation in bloodstream infection and sepsis

Specifications

At a glance

Test type: Phenotypic, MIC-based antimicrobial susceptibility test (AST)
Sample input: Directly from positive blood culture
Time to result: Significantly faster than conventional culture-based AST workflows
Throughput: Random-access loading for continuous, on-demand processing
Panels: Gram-negative and Gram-positive panels available
Sample preparation: No McFarland prep; minimal sample handling
Interpretation: On-board expert system with selectable interpretive guidelines
Maintenance: Low-maintenance, walk-away design

Specifications are indicative and provided for general guidance. Exact configurations, claims and regulatory status vary by model and region — contact us for the current datasheet.

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