Eosinophils

Haematology marker

Eosinophils

Category: Haematology
Unit: x10^9/L

White blood cells involved in allergic responses and parasitic infections.

PED Notes

Not typically affected by AAS. Elevation may indicate allergic reaction, parasitic infection, or certain medications.

When high

When elevated (eosinophilia, >0.5 x10^9/L):

Common causes:

  • Allergies -- seasonal, food, or medication-related (most common cause)
  • Parasitic infection -- especially if travelled to endemic areas or consumed raw/undercooked meat
  • Medications -- some supplements or NSAIDs can trigger eosinophilia
  • Asthma/atopy -- often elevated alongside IgE

Supplements:

  • Quercetin -- 500mg 2x/day (natural antihistamine and mast cell stabiliser)
  • Vitamin C -- 1-2g/day (natural antihistamine effect)
  • Omega-3 (EPA/DHA) -- 2-3g/day (anti-inflammatory)

Lifestyle:

  • Identify and remove allergen if allergy-related
  • If >1.5 x10^9/L or persistent, investigate for parasitic infection (stool testing) or medication reaction
  • Mild eosinophilia (<1.0) with known allergies is usually benign

Educational information, not medical advice. Nothing here is a prescription or a treatment plan, and it does not account for your history, medications or conditions. Use it to ask better questions: bring it to your doctor and decide together. Full disclaimer.

History Chart

Reading History

Frequently Asked Questions

Reference Ranges

Standard Range

0 - 0.5 x10^9/L

Statistics