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Related Concept Videos

Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

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A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
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Sputum Studies II: Culture and Sensitivity01:20

Sputum Studies II: Culture and Sensitivity

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Description
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
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Related Experiment Video

Updated: Sep 19, 2025

Preparation of a Blood Culture Pellet for Rapid Bacterial Identification and Antibiotic Susceptibility Testing
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Likelihood of blood culture positivity using SeptiCyte RAPID.

Krupa Navalkar1, Alyse Wheelock2, Melissa Gregory2

  • 1Immunexpress Inc., Seattle, WA 98109, USA.

Medrxiv : the Preprint Server for Health Sciences
|June 10, 2025
PubMed
Summary

The SeptiScore test shows a strong correlation with blood culture results for bloodstream infections (BSI). Elevated SeptiScores indicate a higher likelihood of positive blood cultures, aiding early sepsis diagnosis.

Keywords:
SeptiCyte RAPIDSeptiScoreblood cultureblood stream infectionsepsis

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Area of Science:

  • Medical Diagnostics
  • Infectious Diseases
  • Clinical Microbiology

Background:

  • Early diagnosis of bloodstream infections (BSI) and sepsis is crucial for effective treatment.
  • Blood culture is a standard diagnostic method, but results can be delayed.
  • Novel diagnostic tools are needed to improve the speed and accuracy of BSI detection.

Purpose of the Study:

  • To investigate the association between SeptiCyte RAPID test results (SeptiScores) and blood culture outcomes.
  • To determine if SeptiScores can predict the likelihood of positive blood cultures in patients with suspected sepsis.

Main Methods:

  • Retrospective analysis of individual patient data from three prospective clinical studies.
  • Data collected from North America, Europe, and Africa.
  • Comparison of SeptiCyte RAPID test results (SeptiScores) with conventional blood culture results.

Main Results:

  • A significant positive correlation was observed between elevated SeptiScores and positive blood culture results.
  • Low SeptiScores were associated with negative blood culture results.
  • A non-linear positive correlation demonstrated that SeptiScores >10 increase the probability of positive blood cultures.

Conclusions:

  • Elevated SeptiScores, obtained prior to blood culture results, indicate increased likelihood of BSI.
  • The SeptiScore test may enhance the efficiency of blood culture practices, especially in resource-limited settings.
  • Clinical utility lies in aiding patient selection and interpreting blood culture results for sepsis management.