Eosinophil Count
A white blood cell that climbs with allergies, asthma, and parasitic infection.
Consider this test if:
- Persistent allergic symptoms, asthma, chronic hives, or eczema that is hard to control
- Suspected parasitic infection or recent travel to a high-exposure area
- Investigating an unexplained rash, drug reaction, or recurring GI symptoms
- Tracking eosinophils over time while managing a known allergic or eosinophilic condition
- An abnormal white blood cell pattern on a prior complete blood count
- HSA/FSA eligible
- Typical results in 1 day · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting required. Eosinophil counts vary with time of day, typically lowest in the morning when cortisol peaks, and are suppressed by corticosteroids, so note any steroid use. Recent acute infection or physical stress can temporarily lower the count.
Video consult with your Care Team
A 1:1 call to discuss your health.
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What this test is for
Eosinophils are a type of white blood cell involved in allergic responses and defense against parasites. An elevated count (eosinophilia) is commonly seen with allergies, asthma, eczema and other skin conditions, drug reactions, and parasitic infections, and at higher levels it points toward conditions like eosinophilic gastroenteritis, certain lung diseases, or, rarely, hypereosinophilic syndromes and some blood cancers. A low or suppressed count is typical with acute stress, steroid use, and high cortisol states such as Cushing syndrome. The number is most useful read alongside symptoms and the rest of a complete blood count, since a normal eosinophil count does not rule out parasitic disease. It is the marker to check when persistent allergic symptoms, unexplained rashes, wheezing, or possible parasite exposure need sorting out.
- Specimen
- Whole blood
- Method
- Automated cell count
- Measures
- Number concentration
What you'll learn
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Typical results in 1 day
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
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$9 /mo
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Without membership
$0
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
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