New research shows that combining early clinical and laboratory data with the SeptiCyte® RAPID host-response test can significantly improve the accuracy of sepsis diagnosis within the first three hours of ICU presentation, potentially supporting earlier and more informed treatment decisions.
A study of 284 critically ill children found that SeptiCyte® RAPID can help distinguish sepsis from noninfectious systemic inflammation, with diagnostic performance comparable to adults and results available in about one hour.
Ruling In and Ruling Out Sepsis Using Likelihood Ratios of a Host Response Assay
This study evaluated data from 889 critically ill patients to determine how likelihood ratios across score bands of the SeptiCyte® RAPID gene expression assay (SeptiScore) differentiate sepsis from non-infectious systemic inflammatory response syndrome (SIRS). The findings demonstrate that high SeptiScores yield strong positive likelihood ratios to effectively rule in sepsis, while low SeptiScores provide low negative likelihood ratios suitable for ruling it out.
This multicenter study found that SeptiScore was more accurate than standard infection markers such as C-reactive protein, procalcitonin, and white blood cell count for distinguishing true healthcare-associated infections from trauma-related inflammation in critically ill ICU trauma patients.
Read more about this study to validate the SeptiCyte® RAPID assay, a molecular test to distinguish sepsis from sterile inflammation, by determining its diagnostic accuracy in critically ill patients who meet criteria for sepsis according to Sepsis-3 definition on ICU admission.
Likelihood of Blood Culture Positivity Using SeptiCyte® RAPID
Higher SeptiCyte® RAPID scores were associated with a greater likelihood of positive blood cultures in patients with suspected sepsis. The findings suggest the test may help clinicians estimate infection risk earlier than traditional culture results.
This study found that rapid culture-independent diagnostics, including T2 magnetic resonance testing and a host response assay (SeptiScore), showed promise in managing febrile neutropenia in bone marrow transplant patients, with SeptiScore helping to differentiate infectious from non-infectious fever despite limited pathogen coverage by T2MR.
Data highlights the good performance of SeptiCyte® RAPID in yielding negative results in patients undergoing CPB without risk of infectious complications and subsequent early development of septic shock.
This study explored whether a gene expression test could identify ICU-acquired infections in critically ill patients. The test outperformed traditional biomarkers, showing promise for faster and more reliable diagnosis.
Infection,2025 Aug 11. doi: 10.1007/s15010-025-02602-z.
This pilot study evaluated how well the SeptiCyte® RAPID test detects sepsis in critically ill patients suffering from occlusive acute mesenteric ischemia. The authors explored its diagnostic accuracy and potential to support both antimicrobial stewardship and assessment of systemic inflammatory response syndrome.
Journal of Critical Care. 2025 Oct:89:155128. doi: 10.1016/j.jcrc.2025.155128. Ep
This study aims to evaluate the effectiveness of a point-of-care molecular host response assay (SeptiCyte® RAPID) in accurately differentiating sepsis from post-surgical inflammation in critically ill patients.
Infection. 2025 Jun;53(3):953-965. doi: 10.1007/s15010-024-02409-4. Ep
The study evaluated the performance of SeptiCyte RAPID across a diverse patient population. Results showed consistent accuracy, unaffected by most demographic and clinical factors.
JCM, Volume 13, Issue 20, 10.3390/jcm13206044
This study explores integrating transcriptome profiling with culture-independent systems and conventional cultures which may increase our ability to diagnose persistent candidemia.
Annals of Clinical Microbiology and Antimicrobials, 23, Article number: 75 (2024); doi.org/10.1186/s12941-024-00736-w
Validation of SeptiCyte Rapid to discriminate sepsis from non-infectious systemic inflammation
This study validates SeptiCyte RAPID for the discrimination of sepsis from non-infectious systemic inflammation, and for the estimation of the probability of sepsis on the first day of ICU admission, under either the Sepsis-2 or Sepsis-3 frameworks.
Journal of Clinical Medicine, Volume 13, Issue 5, 10.3390/jcm13051194
This study explores the association between a SeptiCyte RAPID SeptiScore and persistent bacteraemia as well as metastatic and persistent infection in the context of a proven bacteraemia episode.
Infectious Diseases, DOI: 10.1080/23744235.2023.2294122
Stratification of COVID-19 severity using SeptiCyte Rapid, A novel host immune response test
SeptiCyte RAPID can be a useful tool to identify patients with severe forms of COVID-19 in ED, as well as during follow-up.
Viruses 2023, volume 15, Issue 2, pg. 419; https://doi.org/10.3390/v15020419
The aim of this study was to evaluate SeptiCyte RAPID, a host immune response assay as a triaging tool for COVID-19 patients requiring hospitalization and potentially ICU care.
Scientific Reports 2023, Volume 13, Issue 944, . https://doi.org/10.1038/s41598-023-28178-y
An article describing the research work that led to the validation and FDA market clearance of SeptiCyte LAB for differentiating sepsis from non-infectious systemic inflammation and the recent transition to SeptiCyte RAPID for a more rapid turnaround time on a near-patient platform
Clinical validation of a new approach using host response not pathogen detection to differentiate sepsis from SIRS
American Journal of Respiratory and Critical Care Medicine 2018, Volume 198, Issue 7, Pg 903-913
A pilot study using host response, Septicyte® LAB, to monitor patients post-surgery for the development of infectious complications
Septicyte® LAB, a test measuring host response, clearly differentiates sepsis from post-surgical inflammation in children
Validation of SeptiCyte® LAB for use in ICU patients with acute respiratory failure