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LIAISON PLEX® Respiratory Flex Assay

Sample-to-Customizable Answers for Your Respiratory Algorithms

A multiplexed qualitative molecular test for the simultaneous detection and identification of up to 19 bacterial and viral targets, including SARS-CoV-2.


Disease state

Respiratory tract infections involve a wide variety of etiologic agents and present with overlapping signs and symptoms. Prediction of the causative organism based on clinical findings alone is not reliable. The most frequent agents responsible for respiratory infections are viruses, followed by bacteria. Large respiratory panels for syndromic testing may not suit diverse seasonal, geographic, and patient-to-patient respiratory testing needs. A single comprehensive panel capable of bridging the gap between small and large panels by tailoring the number of pathogens reported is an ideal solution for clinical and cost-efficiencies to pay for only selected pathogens within the comprehensive panel.

Many respiratory pathogens present with the same clinical symptoms

The value of LIAISON PLEX® Respiratory Flex Assay

Customize your syndromic respiratory panel with one flexible solution.

Meets the needs of the dynamic post-pandemic respiratory landscape

Adapt to guidelines, unique testing algorithms, or the specific needs of patients and providers with a broad yet customizable respiratory panel.

Simplified workflow

Automated, multiplex, sample-to-answer system and all-in-one reagents for use on nasopharnygeal swabs.

The right assay design

Choice matters. Choose targets based on patient population and clinical symptoms.

How LIAISON PLEX® Respiratory Flex Assay works

LIAISON PLEX® Respiratory Flex Assay is a sample-to-answer, multiplexed in vitro diagnostic test for the detection and identification of respiratory disease-causing viruses and bacteria from patient samples, all in one self-contained cartridge.


Transfer sample

Transfer sample to cartridge.



Set up the run on the instrument. Scan the Sample ID and the Cartridge ID.


Load and run

Load the cartridge, initiate the Run, and walk away.

Indications for LIAISON PLEX® Respiratory Flex Assay use

Assay and system

An automated, multiplex PCR assay run on the LIAISON PLEX® System to detect up to 5 bacterial and 14 viral pathogens, including the most relevant pathogen today—SARS-CoV-2—in one sample.

Patient types

Human patients with signs and symptoms of respiratory tract infection.

Diagnostic Lab

Hospital,  Commercial, Reference and Public Health laboratories.

LIAISON PLEX® Respiratory Flex Assay

A broad range of targets that can be customizable to your patient population



Parainfluenza 1

Bordetella holmesii

Human Coronavirus

Parainfluenza 2

Bordetella parapertussis

Human Metapneumovirus

Parainfluenza 3

Bordetella pertussis

Influenza A

Parainfluenza 4

Chlamydia pneumoniae

Influenza A (subtype H1)


Mycoplasma pneumoniae

Influenza A (subtype H3)


Influenza B


To be used on the LIAISON PLEX® System

The LIAISON PLEX® System is a next-generation, multiplex, sample-to-answer molecular diagnostic platform. Its proprietary Flex® Software enables users to pay only for required targets, with the option to customize results as needed.



Flexibility like never before with an easy-to-use, automated system for customizable syndromic testing.

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LIAISON PLEX® Respiratory Flex Assay Ordering info

Part Name
Kit Size
Registration Status
Part Number

LIAISON PLEX® Respiratory Flex Assay Kit





Diasorin document repository


Luminex document repository

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Research publications

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More details about LIAISON PLEX® Respiratory Flex Assay

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