What is this test?
This laboratory test is performed on a cerebrospinal fluid sample to detect the presence of aerobic bacteria on the culture, and under microscope and to guide antimicrobial therapy. This test helps in identifying the illness of the central nervous system and its cause. It also helps in guiding the appropriate treatment.
Why is this test performed?
This test is performed to help in identifying bacteria that are responsible for inflammation and infection of the central nervous system (brain and spinal cord).
- What is cerebrospinal fluid?
Cerebrospinal fluid is a colorless liquid the bathes the brain and spinal cord. It plays a very important role in cushioning the central nervous system. It also provides nutrients to the spine and eliminates waste products.
- How to prepare for this test?
Empty your bladder and bowel before the test. Inform your doctor about your completed medical history, especially of medicine such as blood-thinners and allergies.
- What are the risks of this test?
- Bleeding
- Infection
- Damage to spinal cord nerves
- Headache after the test
- CSF leakage from injection site
- Allergic reaction to anesthetic.
- Is the procedure painful?
No, a numbing medicine is used to make it a painless procedure. However, pressure is felt from the needle.
- What other tests might be performed with CSF Culture?
- Blood culture
- Blood tests
- CBC
- MRI
Positive or negative
- Interpretation of test results:
Positive: Pathogenic organism detected and identified on culture. Gram staining is performed on the culture to provide the description of bacteria. The bacteria is further tested for sensitivity and the appropriate antibiotic is mentioned in the reports.
Negative: No growth on culture is seen. Pathogenic organisms are absent.