What is this test?
This is a microbiological culture in which the specimen is observed for microbial growth. If growth occurs, the laboratory may identify the isolate and perform susceptibility testing when indicated.
Why might it be ordered?
- When microorganisms in the bloodstream are suspected.
- To identify an organism that may be related to the symptoms.
- For subsequent antimicrobial susceptibility testing when a suitable isolate is available.
What sample is needed?
Blood is collected by a healthcare professional under the blood-culture protocol. The clinical team determines the number and timing of collections.
How should you prepare?
Report current or recent antibiotic use because it may suppress growth. Do not delay urgent care or stop treatment without a clinician's instruction.
How should you understand the result?
The report may state no growth or growth, identify the organism, and provide susceptibility when appropriate. Significance depends on the number and timing of positive cultures, symptoms, and clinical picture.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.