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The only real-time PCR system that's CLIA-waived for Influenza A/B, RSV and Strep A in 20 minutes or less.

The cobas® Liat® System brings lab-quality testing to the point of care, delivering accurate results in 20 minutes or less – enabling you to make the best treatment decisions possible when your patients need it most.

  • PCR accuracy

    Real-time PCR at the point of care.

  • Quick, definitive results

    No need for interpretation.

  • Fast, easy operation

    Three simple steps with test results in 20 minutes or less.

  • Optimize treatment immediately

    Confidently treat patients the day you conduct the test.

  • No confirmation needed

    Whether results are positive or negative, you can confidently treat at the time of the patient visit without the need for confirmation.

How is the flu near you?

Roche Diagnostics provides this tool for information purposes only and is not responsible for the content. Content provided and maintained by the US Centers for Disease Control and Prevention (CDC).

Provide answers at the appointment.

When there's a pressing need for a diagnosis and treatment decision, patients rely on you for answers. With the cobas® Liat® System, there's no need to confirm negative test results at the time of visit – so you can make the right treatment decision right away.

Lab-quality results at the point of care.

The cobas® Liat® System brings molecular testing with real-time PCR to the point of care. Compact and easy to use, it's designed for STAT testing to support time-sensitive diagnoses and treatment decisions.

cobas® Liat® Analyzer

All nucleic acid testing processes are fully automated, including sample preparation, amplification and real-time detection.

cobas® Liat® assay tubes

Each cobas® Liat® assay tube contains all assay reagents for a single test, prepared in isolated segments – add nothing but your patient sample.

Working principle.

The cobas® Liat® Analyzer compresses the assay tube to selectively release reagents from tube segments, moves the sample from one segment to another, and controls reaction conditions at different temperatures.

cobas® Liat® Assay Menu

  • Strep A

    cobas® Strep A Performance

    Sensitivity: 97.7%
    Specificity: 93.3%
    LOD: 5 - 20 CFU/mL

    FDA 510(k) cleared and CLIA-waived.

    Intended use for cobas® Strep A*
    The cobas® Strep A nucleic acid test for use on the cobas® Liat® System (cobas® Liat® Strep A) is a qualitative in vitro diagnostic test for the detection of Streptococcus pyogenes (Group Aβ– hemolytic Streptococcus, Strep A) in the throat-swab specimens from patients with signs and symptoms of pharyngitis.

    The cobas® Liat® Strep A assay uses nucleic acid purification and polymerase chain reaction (PCR) technology to detect Streptococcus pyogenes by targeting a segment of the Streptococcus pyogenes genome.

    *Package insert cobas® Strep A, Rev. 4
  • Influenza A/B

    cobas® Influenza A/B Performance

    Influenza A
    Sensitivity: 97.5%
    Specificity: 97.9%
    LOD: 10-2 - 10-1 TCID50/mL

    Influenza B
    Sensitivity: 96.9%
    Specificity: 97.9%
    LOD: 10-3 - 10-1 TCID50/mL

    FDA 510(k) cleared and CLIA-waived.

    Intended use for cobas® Influenza A/B*
    The cobas® Influenza A/B nucleic acid test for use on the cobas® Liat® System (cobas® Liat® Influenza A/B) is an automated multiplex real-time RT-PCR assay for the rapid in vitro qualitative detection and discrimination of Influenza A virus and Influenza B virus RNA in nasopharyngeal swab specimens from patients with signs and symptoms of respiratory infection in conjunction with clinical and epidemiological risk factors. The test is intended for use as an aid in the differential diagnosis of Influenza A and Influenza B in humans and is not intended to detect Influenza C.

    *Package insert cobas® Influenza A/B, Rev. 8
  • Influenza A/B & RSV

    cobas® Influenza A/B & RSV Performance (CLIA Waived Data)

    Influenza A
    Positive Agreement:98.4%
    Negative Agreement: 96.5%

    Influenza B
    Positive Agreement:97.9%
    Negative Agreement: 99.4%

    RSV
    Positive Agreement:97.8%
    Negative Agreement: 98.4%

    FDA 510(k) cleared and CLIA-waived.

    Intended use for cobas® Influenza A/B & RSV
    The cobas® Influenza A/B & RSV Nucleic Acid Test for Use on the cobas® Liat® System (cobas® Influenza A/B & RSV) is an automated multiplex real-time RT-PCR assay for the rapid in vitro qualitative detection and discrimination of Influenza A virus, Influenza B virus and respiratory syncytial virus (RSV) RNA in nasopharyngeal swab specimens from patients with signs and symptoms of respiratory infection in conjunction with clinical and epidemiological risk factors. The test is intended for use as an aid in the differential diagnosis of Influenza A, Influenza B, and RSV in humans and is not intended to detect Influenza C.

Cut steps. Speed up treatment.

Traditional testing approachcobas® Liat® protocol 

  1. Collect Sample.
  2. Prepare Sample.
  3. Read the Results.
  4. If positive (+) - provide optimal treatment
    If negative (-) - go through remaining steps
  5. Additional sample prep.
  6. Send for confirmation.
  7. Wait for results.
  8. Follow up with patient.
  9. Provide optimal treatment.
  10. Collect sample and add to assay tube.
  11. Scan assay tube and sample.
  12. Insert assay tube to start test.

cobas® Liat® protocol

  1. Collect sample and add to assay tube.
  2. Scan assay tube and sample.
  3. Insert assay tube to start test.

cobas® Liat® System

A clear advantage

Liat® Alerei Rapid Antigen Testing
1. Test in any setting
2. Molecular testing
3. Real-time PCR
4. CLIA-waived RSV assay
5. No Strep A confirmation of negative results at time of visit
6. Walk-away workflow
7. Closed system
Liat®
Test in any setting
Molecular testing
Real-time PCR
CLIA-waived RSV assay
No Strep A confirmation of negative results at time of visit
Walk-away workflow
Closed system
Alerei
Test in any setting
Molecular testing
Real-time PCR
CLIA-waived RSV assay
No Strep A confirmation of negative results at time of visit
Walk-away workflow
Closed system
Rapid Antigen Testing
Test in any setting
Molecular testing
Real-time PCR
CLIA-waived RSV assay
No Strep A confirmation of negative results at time of visit
Walk-away workflow
Closed system