Home Products Most Popular Contact
No items in your cart.
The page below is a sample from the LabCE course White Cell and Platelet Disorders: Peripheral Blood Clues to Nonneoplastic Conditions. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about White Cell and Platelet Disorders: Peripheral Blood Clues to Nonneoplastic Conditions (online CE course) »
How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 123 CE courses, most popular
$95 Add to cart
Pick Your Courses
Up to 8 CE hours
$50 Add to cart
Individual course$20 Add to cart


The cytoplasm of eosinophils is evenly filled by numerous orange-red granules of uniform size. They do not overlie the nucleus. The eosinophil granules contain numerous enzymes including peroxidase, phospholipase D, catalase, acid phosphatase, and vitamin B12-binding proteins.
The eosinophil's ability to kill bacteria is less than that of neutrophils. Their main purpose is to counteract parasitic infections and to participate in immune allergic reactions. They may also be increased in a variety of nonimmunologic inflammatory responses from bacteria and fungi causing chronic infections.
A high percentages of eosinophils may be present in the peripheral blood smears of patients with a variety of non-neoplastic conditions including:
  • Asthma
  • Urticaria
  • Loeffler syndrome
  • Parasitic infections
Malignancies, collagen vascular diseases, and myeloproliferative disorders may also be associated with prominent eosinophils.