Antibody to *Candida albicans* (Serum) – Immunoassay
This test measures antibodies in your blood that may indicate past or current exposure to the yeast *Candida albicans*, commonly found in infections like candidiasis.
["Checks for past or possible fungal exposure in your body."]
Key facts at a glance
- LOINC
- 47425-4
- Short code
- ASPNIDB
- Synonyms
- A nidulans B Ab Ser Ql
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red-top vacutainer tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Enzyme Immunoassay (EIA) / Immunodiffusion / Complement Fixation
- CPT
- 86606
- SNOMED
- 39513008
- Specimen volume
- 1.0 mL serum (minimum 0.5 mL)
- Stability
- Stable for 7 days at 2-8°C; for longer storage, freeze at -20°C or below for up to 30 days. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 48–168 hours
- Order
- routine
What This Test Measures
This test detects specific antibodies produced by your immune system in response to *Candida albicans*, a type of yeast that can cause infections in various parts of the body. Antibodies are proteins your body makes to fight infections. If you have had or are developing a *Candida* infection, your immune system may produce these antibodies. However, antibodies alone do not confirm an active infection; they only suggest prior exposure or potential susceptibility.
Why It’s Ordered
Your healthcare provider may order this test if you have symptoms of a fungal infection (such as persistent thrush, skin rashes, or recurrent urinary tract infections), if you have a weakened immune system, or if you are being evaluated for conditions like chronic mucocutaneous candidiasis. It can also be used in research or monitoring for certain immune-related conditions.
What to Expect Before the Test
No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, similar to other routine blood tests. If you are on blood-thinning medication, let your provider know before the test.
What to Expect During the Test
The blood sample is collected in a tube and sent to a lab for analysis using an immunoassay method. This test does not require fasting or any special timing. Results are typically reported as positive or negative for the presence of antibodies.
Reference range
Negative: No Aspergillus nidulans B antibodies detected. Positive: Antibodies to Aspergillus nidulans B detected, suggesting current or past exposure.N/A
No fasting required. No special patient preparation is necessary prior to specimen collection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results suggest prior exposure to *Candida albicans*, which may indicate a history of infection or increased susceptibility. However, antibodies do not always correlate with current infection. This test can be useful in diagnosing certain immune disorders or monitoring immune function in patients with recurrent fungal infections. It is not a direct diagnostic tool for active candidiasis but can guide further evaluation.
Short name
Candida Antibody (Serum)
Frequently asked questions
What does a positive result mean?
Can this test be used to diagnose a current *Candida* infection?
Is fasting required 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 15, 2026. · Read our editorial policy