Eosinophil count in serum/plasma (qualitative)
This test checks whether your blood contains abnormal levels of eosinophils, a type of white blood cell. Eosinophils help fight infections and respond to allergies.
["Eosinophils can signal infections, allergies, or other immune responses—this test helps identify if they’re too high or low."]
Key facts at a glance
- LOINC
- 6577-1
- Short code
- E coli VTN2 NAb Titr Stl Nt
- Synonyms
- E coli VTN2 NAb Titr Stl Nt
- Category
- chemistry
- Sample
- stool
- Container
- Clean container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- neut
- Specimen volume
- 5 g
- Stability
- Refrigerated: 24h, Frozen: 7d
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your doctor may recommend this test if you have symptoms like persistent itching, skin rashes, asthma, or unexplained weight loss. It can also help diagnose conditions such as parasitic infections, certain cancers, or autoimmune disorders.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test is quick and painless.
What the Results Mean
Results are qualitative (yes/no) rather than numeric. High eosinophil levels may indicate allergies, infections, or inflammatory conditions. Low levels could suggest immune suppression or other health concerns.
Common Conditions Linked to Eosinophil Levels
Elevated eosinophils are often seen in allergic reactions, parasitic infections, certain lung diseases (like asthma or eosinophilic pneumonia), or cancers like leukemia.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical significance: Eosinophils play a key role in allergic responses and parasitic infections. Elevated counts may guide treatment for allergies, infections, or autoimmune conditions, while low counts could signal immune dysfunction or other systemic issues.
Short name
Eosinophil Qualitative
Frequently asked questions
What triggers a referral for this test?
Does fasting affect this test?
How long does it take to get results?
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