Lab Test

Absolute Eosinophils

Eos Count, Eosinophil count

Test Codes

Antrim #20640, EPIC: LAB5134



Specimen Collection Criteria

Collect (preferred specimen): One 4.0 mL Lavender-top K2EDTA tube. (Minimum: 2.0 mL)
Also acceptable: One Lavender-top K2EDTA Microtainer®. (Minimum: 300 mcL)

Physician Office/Draw Specimen Preparation

Maintain specimens refrigerated (2-8°C or 36-46°F) prior to transport. Room temperature (20-26°C or 68-78.8°F) is acceptable for a maximum of 8 hours.

Preparation for Courier Transport

Transport: Whole blood or capillary blood, refrigerated (2-8°C or 36-46°F). (Minimum: 2.0 mL whole blood or 300 mcL capillary blood)

Rejection Criteria

  • Specimens containing clots.
  • Insufficient volume.
  • Frozen specimens.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 72 hours
Frozen (-20°C/-4°F or below): Unacceptable

Specimen Storage in Department Prior to Disposal:

Refrigerated (2-8°C or 36-46°F): 7 days


Canton Laboratory
Dearborn Hematology Laboratory
Farmington Hills Hematology Laboratory
Grosse Pointe Hematology Laboratory
Lenox Laboratory
Livonia Laboratory
Royal Oak Hematology Laboratory
Taylor Hematology Laboratory
Trenton Hematology Laboratory
Troy Hematology Laboratory
Wayne Blood Bank


Sunday – Saturday, 24 hours a day.
Results available within 90 minutes.

Reference Range

Female: 0.0-0.5 bill/L.
Male: 0.0-0.4 bill/L.

Please see Hematology Pediatric Ranges.

Test Methodology


Clinical Utility

This test can be used to detect eosinophilia in:

  • Allergic disorders: bronchial asthma, urticaria, hay fever, some instances of drug sensitivity, sensitivity to some x-ray media (e.g. IVP iodine).
  • Skin diseases: pemphigus and dermatitis herpetiformis.
  • Parasitic infections: especially parasites that invade the tissues (trichinosis, echinococcus disease); occurs less regularly with intestinal parasitism.
  • Certain diseases of the hematopoietic system: Chronic myelogenous leukemia, Chronic eosinophilic leukemia, Hodgkin's disease, Systemic mast cell disease, Acute leukemia, T-cell lymphoma.
  • Malignant diseases of any type: especially with metastasis or necrosis.
  • Pulmonary Disorders: Loeffler syndrome, sarcoidosis, Churg-Strauss syndrome.

CPT Codes

LOINC:  712-0


Last Updated


Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.