Fungal Infection Detection by Qualitative PCR Probe on Specified Regions of DNA
This test checks for the presence of fungal DNA in your body using a polymerase chain reaction (PCR) method. It helps identify infections caused by fungi, which can affect various parts of the body.
["A simple test to detect fungal DNA, useful for diagnosing infections that may not show up with other tests."]
Key facts at a glance
- LOINC
- 91090-1
- Short code
- Fungal ITS region Spec Ql NAA+probe
- Synonyms
- Fungal ITS region Spec Ql NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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
This test checks a sample from your body for evidence of a fungal infection. It helps determine whether fungi—the organisms responsible for conditions such as athlete's foot, ringworm, or more serious internal infections—are present, and it can often identify the specific type so your healthcare provider can select the most effective antifungal treatment for you.
The test analyzes specific regions of fungal DNA found in your sample. By detecting these genetic markers, it can confirm whether fungi are present in your system. This method is highly sensitive and can identify fungi even in small amounts.
In the laboratory, your sample is examined under a microscope, treated with special stains, or placed in conditions that encourage any fungi present to grow. Laboratory professionals look for features that show whether fungus is present and, when possible, which type it is. A report describing the findings is then sent to your healthcare provider, who will explain what the results mean for your care.
PCR technology amplifies tiny amounts of fungal DNA from your sample. The test uses a probe to detect the presence of fungal genetic material, providing a qualitative result—meaning it tells you if fungi are present but not the type or amount.
Your healthcare provider may order this test if you have symptoms that could be caused by a fungal infection, such as a persistent rash, nail changes, cough, or fever that has not improved with standard treatment. It may also be used if you have a weakened immune system, to confirm a suspected diagnosis, or to monitor how well antifungal treatment is working.
Your healthcare provider may recommend this test if you have symptoms like persistent infections, unusual skin rashes, or signs of systemic fungal infections. It’s also used in monitoring patients with weakened immune systems or those at higher risk for fungal infections.
The type of sample depends on where the suspected infection is located and may include a skin scraping, nail clipping, swab, blood, or another body fluid collected by your healthcare provider. No special preparation is usually required, but follow any instructions you are given, and tell the staff about all medications you take, especially antibiotics or antifungal drugs, since these can affect results.
The sample for this test is collected based on your clinical needs—it could be a blood sample, fluid, or other body substance. The lab processes the sample to extract DNA, which is then analyzed for fungal markers.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Fungal PCR Qualitative Test
Frequently asked questions
This test helps confirm fungal infections that may not be visible through other diagnostic methods, such as cultures or imaging. Early detection is crucial for guiding treatment, especially in cases where antifungal medications are needed to prevent complications.
Results from this test are typically available within 24 to 48 hours, depending on lab processing times. Your healthcare provider will discuss the results with you during your follow-up visit.
No, this test detects fungal DNA in general but does not specify the type of fungus. For a precise identification, additional testing or cultures may be required.
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