Quantitative Culture for Granulomatous Infections (Aerobic and Anaerobic)
This test helps identify specific bacteria or fungi that may cause inflammation in your body, often seen in conditions like tuberculosis or fungal infections.
["It helps guide treatment by confirming the type of infection causing granulomas (clumps of immune cells)."]
Key facts at a glance
- LOINC
- 6595-3
- Short code
- K granulomatis Islt Ql Cult
- Synonyms
- K granulomatis Islt Ql Cult
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- organism-specific-culture
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Is a Granuloma Culture Test Used For?
Granulomas are small clusters of immune cells that can form in response to chronic infections, such as tuberculosis or certain fungal infections. This test checks a sample of your blood, tissue, or other body fluid for bacteria or fungi that may be causing these clusters. It’s particularly useful when doctors suspect an infection that doesn’t respond to standard antibiotics or when granulomas are found in imaging tests.
How Is the Test Performed?
A small sample of your blood, sputum, tissue, or other bodily fluid is collected and sent to a lab. The sample is then cultured under controlled conditions to allow any bacteria or fungi present to grow. Over several days to weeks, the lab identifies the specific microorganisms if they are found.
What Does a Positive Result Mean?
A positive result means that specific bacteria or fungi were detected in your sample. This confirms the presence of an infection that may require targeted treatment, such as antibiotics or antifungal medications. The type of microorganism found helps your healthcare provider choose the best treatment plan.
What Does a Negative Result Mean?
A negative result means no bacteria or fungi were detected in the sample. However, this does not always rule out an infection. Granulomas may form without an active infection, or the infection may be present in a part of the body not tested. Your doctor will discuss further testing or monitoring if needed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Granuloma cultures are critical for diagnosing infections that cause persistent inflammation, such as tuberculosis, fungal infections (e.g., histoplasmosis), or other rare infections. Accurate identification helps avoid unnecessary antibiotics, prevents spread of infection, and ensures the right treatment is started promptly. This test is especially important for patients with symptoms like persistent cough, weight loss, or unexplained fevers, or those with known risk factors for granulomatous infections.
Short name
Granuloma Culture
Frequently asked questions
Why might my doctor order this test?
How long does it take to get results?
Can I take antibiotics before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy