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A urine culture and sensitivity test is a lab procedure used to detect and identify bacteria or yeast in a urine sample that may be causing a urinary tract infection (UTI). The sensitivity portion of the test determines which antibiotics are most effective at killing or inhibiting the growth of the identified microorganisms. This information helps doctors choose the best treatment for the infection.
Purpose:
Diagnose UTIs:
The test helps confirm whether a UTI is present and identify the specific bacteria or yeast causing the infection.
Guide Treatment:
It determines which antibiotics are effective against the identified bacteria, allowing doctors to prescribe the most appropriate medication.
Identify Antibiotic Resistance:
The test can reveal if bacteria are resistant to certain antibiotics, which is crucial for effective treatment.
Procedure:
Sample Collection: A clean-catch midstream urine sample is collected in a sterile container.
Culture: The urine sample is placed in a culture medium that encourages bacterial growth.
Identification: If bacteria grow, they are identified using various methods.
Sensitivity Testing: The identified bacteria are tested against a range of antibiotics to determine their effectiveness.
Why is it done?
Symptoms of UTI:
Doctors may order the test if a patient experiences symptoms like painful urination, frequent urination, cloudy or foul-smelling urine, or back pain.
Recurring UTIs:
The test is often used to manage and treat recurrent or persistent UTIs.
High-risk individuals:
Individuals with diabetes, kidney problems, or weakened immune systems are often screened for UTIs.
Before procedures:
It may be done before certain procedures that can introduce bacteria into the urinary tract.
Interpreting Results:
Positive Culture: Bacterial growth in the culture indicates a UTI.
Negative Culture: No bacterial growth suggests no UTI.
Sensitivity Report: The report indicates which antibiotics are effective against the bacteria.
Important Notes:
It's crucial to follow the instructions for sample collection to avoid contamination.
The results are typically available within a few days, but some cultures may take longer.
The test is usually not required to be done on an empty stomach
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