Candida albicans antibody, serum/plasma (immunoassay)
This blood test checks for antibodies to *Candida albicans*, a type of yeast that can cause infections. Antibodies are proteins your immune system makes in response to exposure to the yeast.
["Helps identify past or current immune response to *Candida albicans* in your bloodstream."]
Key facts at a glance
- LOINC
- 111309-1
- Short code
- CANDAB
- Synonyms
- C albicans Ab Msmt Ser
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red-top vacutainer tube; red blood cells should be separated from serum within 2 hours of collection
- Units
- N/A
- Ref low
- 0
- Ref high
- 1
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Enzyme Immunoassay (EIA) or Immunofluorescence Assay (IFA) for detection of Candida albicans-specific antibodies (IgG, IgM, IgA) in serum
- CPT
- 86645
- SNOMED
- 39512009
- Specimen volume
- 1–2 mL serum (minimum 0.5 mL)
- Stability
- Stable at room temperature for 8 hours; refrigerated (2–8°C) for 7 days; frozen at -20°C or below for up to 6 months. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 100
- Lipemia max
- 500
- Icterus max
- 20
- TAT
- 24–72 hours
- Order
- routine
What Does This Test Measure?
The test detects antibodies produced by your immune system in response to *Candida albicans*, a fungus that can live in your body without causing illness in most people. These antibodies indicate your body has encountered the yeast, which may suggest past infection, chronic colonization, or immune response.
Why Might You Need This Test?
Your doctor may order this test if you have symptoms like persistent mouth, throat, or skin infections (e.g., thrush, vaginal yeast infections, or nail infections) that don’t improve with usual treatments. It may also be used in people with weakened immune systems (e.g., HIV, chemotherapy) or those with conditions like diabetes or HIV where yeast infections are more common.
When Might You Get False Results?
Results may not always match symptoms. A positive test could mean past exposure or immune activity, but it doesn’t always mean an active infection. A negative test doesn’t rule out infection—other tests or cultures may be needed.
What Does a Positive or Negative Result Mean?
A positive result suggests your immune system has detected *Candida albicans* antibodies, possibly from past exposure or chronic presence. A negative result means your body hasn’t produced these antibodies at detectable levels, but this doesn’t confirm no infection exists.
Reference range
Negative: <1:160 (IgG); Equivocal: 1:160–1:320; Positive: >1:320. Reference values vary by laboratory and assay method; results should be interpreted in conjunction with clinical findings.N/A
No fasting required. Patients on antifungal therapy should be noted as treatment may affect antibody titers. Avoid testing during active immunosuppressive therapy as results may be falsely negative.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Role in Diagnosis and Monitoring
Short name
Candida antibody test
Frequently asked questions
How often will I need this test?
Can this test replace other diagnostic tests?
What if my test results are abnormal?
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