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Fungal Antigen Detection (Skin Region) by Qualitative Probe

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of fungal organisms in a sample taken from your skin, helping identify infections like ringworm or athlete’s foot.

Quick summary

["Early detection of fungal skin infections may help guide treatment options."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
91092-7
Short code
Fungal ITS region Derm spec Ql NAA+probe
Synonyms
Fungal ITS region Derm 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

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms such as persistent itching, redness, scaling, or unusual growths on your skin, especially in areas like the trunk, groin, or between toes. It can also be used to confirm a suspected fungal skin infection before starting treatment.

What to Expect During the Test

A healthcare professional will collect a sample from your skin using a swab or probe. The sample is then analyzed in a lab to detect fungal antigens, which are specific proteins produced by certain fungi. The result is qualitative, meaning it only indicates whether the fungus is present or not.

Sample Collection and Preparation

No special preparation is needed before this test. You may shower or wash the area if it is dirty or irritated, but avoid using lotions, creams, or ointments on the skin where the sample will be taken. Follow your provider’s instructions carefully.

Test Results and Interpretation

Results are typically reported as either positive (fungal antigen detected) or negative (no fungal antigen detected). A positive result suggests the presence of a fungal infection, while a negative result means no fungal antigens were found in the sample.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Fungal Skin Infection Screening

Frequently asked questions

What does a positive result mean?
A positive result indicates that fungal antigens were found in your skin sample, strongly suggesting a fungal skin infection. This can help confirm a diagnosis and guide treatment decisions, such as prescription antifungal medications.
What does a negative result mean?
A negative result means no fungal antigens were detected in the sample. However, it’s important to note that false negatives can occur, especially if the infection is mild or not actively growing. If you continue to have symptoms, further testing or a repeat sample may be needed.
How soon will I get my results?
Results are usually available within a few days to a week, depending on lab processing times. Your healthcare provider will discuss the results with you and may recommend next steps, such as starting antifungal treatment if needed.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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