Fungal culture with chromogenic agar (qualitative)
This test helps identify and confirm the presence of fungal organisms in your sample, such as blood, urine, or other body fluids.
It supports diagnosis of fungal infections by growing and detecting specific fungal colonies on special agar plates.
Key facts at a glance
- LOINC
- 97946-8
- Short code
- Fungal w Chrom Agar Islt Cult-Color
- Synonyms
- Fungal w Chrom Agar Islt Cult-Color
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- 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 This Test Measures
The test involves collecting a sample (e.g., blood, urine, or other bodily fluids) and growing it on a specialized agar medium that supports fungal growth. Chromogenic agar changes color when certain fungi are present, making them easier to identify under a microscope or after incubation.
How the Test Works
After your sample is placed on the agar, it is incubated under controlled conditions for several days. Fungal colonies will appear as distinct growth patterns, often with a characteristic color change. This helps healthcare providers identify the type of fungus present.
Why It’s Done
This test is typically used to diagnose fungal infections, such as candidiasis (yeast infections), cryptococcosis, or other systemic fungal diseases. It is especially useful for patients with weakened immune systems, those with prolonged antibiotic use, or those showing symptoms like fever, persistent infections, or unexplained skin changes.
Sample Collection and Preparation
Your sample will be collected by a healthcare provider, depending on the suspected infection site. For example, blood cultures may be drawn, urine may be collected, or swabs may be taken from affected areas. The sample is then processed and placed on the chromogenic agar for incubation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive fungal culture confirms the presence of a fungal infection, guiding treatment decisions such as antifungal medications. The type of fungus identified helps determine the most effective therapy. Negative results mean no fungal growth was detected in the sample, but further testing may still be needed if symptoms persist.
Short name
Fungal Culture (Screening)
Frequently asked questions
How long will I need to wait for results?
What does a positive result mean?
Can I take anything to prepare for 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