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cobas® Strep A
Nucleic acid test for use on the cobas® liat system
IVD
For in vitro diagnostic use.
Sore throat, fever, could it be strep A?
Strep A is responsible for over 600 million global cases of acute pharyngitis annually.1 On a global scale, group A Streptococcus (GAS) is a leading cause of morbidity and mortality.2 Clinical symptoms of GAS infection overlap with other diseases. Providing an early and accurate diagnosis enables appropriate prescription of antibiotics which can aid in reducing further complications of Strep A.3
The cobas® Strep A Nucleic acid test for use on the cobas® Liat® System is a real-time polymerase chain reaction (PCR) test for the detection of Strep A in throat swab specimens from patients with signs and symptoms of pharyngitis
cobas® Strep A offers:
- Definitive Strep A PCR results in 15 minutes, for confident treatment decisions
- No confirmation needed, enabling optimized patient workflow
- Informed prescribing to support antibiotic stewardship and patient confidence
Help patients get the treatment and relief they need faster with the reliable accuracy of the cobas® Strep A Test. The cobas® liat system enables definitive and rapid diagnosis, combining powerful PCR technology with fast turnaround time, 15 minutes or less, allowing sample to answer while patients wait.
cobas® Strep A performance4
View full tablecobas® Strep A performance4
| Sensitivity* | Specificity* | |
|---|---|---|
| Strep A LOD: 5 - 20 CFU/mL |
97.7 % (95% CI: 93.4% - 99.2%) |
93.3 % (95% CI: 89.9% - 95.6%) |
The cobas® liat system vs. conventional methods
Signs & Symptoms
Strep score based on clinical manifestations
Could lead to incorrect antibiotic treatment
Unnecessary antibiotics for empirical
treatment based on clinical suspicion.
Not prescribing antibiotics because
clinical suspicion was not high enough,
but it was in fact Strep A
Conventional methods
Strep score based on clinical manifestations
Take throat swab sample
Perform a rapid test and confirm with culture
Negative result needs confirmation5
Send for culture
Wait for results (2-5 days)
cobas® Strep A test
Strep score based on clinical manifestations
Specimen collected
Perform cobas® Strep A Test
(Definitive results in ~15 minutes)
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Overview
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References
- DeWyer A, Scheel A, Webel AR, et al. Prevalence of group A β-hemolytic streptococcal throat carriage and prospective pilot surveillance of streptococcal sore throat in Ugandan school children. Int J Infect Dis. 2020;93:245-251.
- Carapetis JR, Steer AC, Mulholland EK, Weber, M. The global burden of group A streptococcal diseases. Lancet Infect Dis. 2005:5(11);685-694.
- Cunningham MW. Pathogenesis of group A streptococcal infections. Clin Microbiol Rev. 2000;13(3):470-511
- cobas® Strep A [package insert V4], Pleasanton, CA; Roche Molecular Systems, Inc., 2020.
- Shulman ST, et al. Clin Infect Dis. 2012;55(10):1279-82.
COBAS and LIAT are trademarks of Roche.