Candida Antigen Detection (Serum/Plasma)
This test measures the presence of Candida antigens in your blood, helping detect serious fungal infections caused by *Candida* yeasts, such as invasive candidiasis.
["Checks for bloodstream fungal infections that may require urgent medical attention."]
Key facts at a glance
- LOINC
- 92724-4
- Short code
- VAGDNA
- Synonyms
- Candida sp + GV + TV DNA Pnl Vag Probe
- Category
- chemistry
- Sample
- serum
- Container
- Viral transport medium or specific Aptima collection kit (Hologic) for vaginal fluid specimens
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- female
- Age range
- 12–99 years
- Method
- probe
- CPT
- 87481
- SNOMED
- 43491000
- Specimen volume
- 1-2 mL of vaginal fluid in transport medium
- Stability
- Room temperature: 14 days; Refrigerated (2-8°C): 30 days; Frozen (-70°C): 6 months
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms like fever, chills, or unexplained infections, especially after undergoing medical procedures (e.g., central lines, surgeries) that increase risk. It’s also used in patients with weakened immune systems or those with prolonged hospital stays.
What to Expect Before the Test
No special preparation is needed. You may have a small needle inserted into your vein (venipuncture) to draw blood. The process usually takes a few minutes.
What the Results Mean
Positive results indicate the presence of Candida antigens, suggesting an active infection. Negative results mean no detectable antigens were found, but further testing or observation may still be needed.
Common Causes of Positive Results
Positive results are most common in patients with invasive candidiasis (e.g., bloodstream, organ infections) or those with risk factors like diabetes, cancer, or recent antibiotic use.
Reference range
Negative for Candida sp, Gardnerella vaginalis, and Trichomonas vaginalis DNAN/A
Patient should avoid vaginal douching, intercourse, and use of vaginal medications for at least 24-48 hours prior to specimen collection. Ideally specimen should be collected prior to menses or after menstrual flow has ceased.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Urgent Evaluation Needed
Short name
Candida Antigen Test
Frequently asked questions
A positive result signals a fungal infection that requires prompt treatment with antifungal medications. Delayed action can worsen outcomes, especially in immunocompromised patients.
FAQ 1: Can I eat or drink before the blood draw?
FAQ 2: Are there any risks with 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