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Coccidioides antibody titer (serum/plasma)

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

This blood test checks for antibodies to *Coccidioides*, a fungus found in certain desert regions. Antibodies may indicate past or current exposure to the fungus, which can cause infections like coccidioidomycosis.

Quick summary

["This test helps doctors assess risk or diagnose fungal infection from exposure to *Coccidioides* spores."]

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

Key facts at a glance

LOINC
33402-9
Short code
Coccidioides Ab Titr Ser
Synonyms
Coccidioides Ab Titr Ser
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 doctor may order this test if you live in or have traveled to areas with high fungal exposure (e.g., southwestern U.S., parts of Latin America). It’s also used to monitor people with weakened immune systems or symptoms like fever, cough, or joint pain after exposure.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted to draw blood from a vein in your arm. The process takes a few minutes, and you may feel slight discomfort.

What the Results Mean

Positive results suggest exposure to *Coccidioides* and may require further evaluation (e.g., additional tests, imaging). Negative results mean no detectable antibodies, but exposure isn’t ruled out if symptoms persist.

Common Symptoms to Watch For

Infection may cause flu-like symptoms (fatigue, fever, chills) or lung issues (cough, chest pain). Some people develop skin rashes or joint pain. If you’ve had exposure, report symptoms to your doctor.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Coccidioides antibody test

Frequently asked questions

How soon will I get my results?
Results are typically available within 1–3 business days. Your doctor will discuss them with you during your follow-up visit.
Can I get this test at home?
No, this test requires a lab sample from a healthcare provider. Some clinics offer same-day blood draws, but scheduling may be limited.
What if my symptoms improve before results?
Even if symptoms fade, exposure isn’t confirmed without test results. Follow-up may include retesting or additional tests (e.g., fungal cultures) if needed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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