Decision support only, not a diagnosis.
This tool is based on a single-center retrospective study of 202 adult sepsis
patients at KNUST Hospital, Kumasi (32 severe sepsis, 3 septic shock). It is
intended to support, not replace, clinical judgment. No patient data is
stored, transmitted, or saved by this page. Every calculation happens on
your own device and is cleared when you close or refresh the page.
Full blood count
-
Neutrophil-to-Lymphocyte Ratio
Vitals (optional, improves the SIRS estimate below)
SIRS criteria met: enter vitals above to estimate.
Organ dysfunction
Evidence of organ dysfunction present
Check this box if any of the following are present: creatinine or urea
elevated, or clearly rising from baseline (renal); low platelet count
(hematologic); elevated bilirubin or deranged liver enzymes (hepatic);
low oxygen saturation or new oxygen requirement (respiratory); new
confusion, drowsiness, or reduced responsiveness (neurologic).
Hypotension
Persistent hypotension despite fluids
Check this box only if blood pressure has remained low (systolic under
approximately 90) after adequate IV fluids have been given, or a
vasopressor has been started. A single low reading with no fluid
response documented is not sufficient on its own.
Result
0NLR scale30+
Sensitivity71.4%
Specificity71.3%
Positive predictive value34.2%
Negative predictive value92.2%
NLR AUC 0.740 (95% CI 0.643–0.837) at cutoff 7.72.
Total WBC count performed comparably (AUC 0.729, 95% CI 0.632–0.826);
the difference between the two markers was not statistically significant
(DeLong test, P = .856).
About this tool
Built by Godwin Annor as part of a final-year project for the HND
Medical Laboratory Technology programme at Kumasi Technical University.
Based on Neutrophil-to-Lymphocyte Ratio as a Marker of Sepsis
Severity, a retrospective study of 206 records (202 eligible) at
KNUST Hospital, Kumasi, Ghana.