Eosinophil Count, Blood

Message

INCLUDED IN CBC W/ PLATELET & DIFFERENTIAL

Test Code

CBCDF

Quest Code

425

Alias/See Also

005298 LabCorp TC

CPT Codes
85004, 85048

Preferred Specimen

Whole blood from a full EDTA (lavender-top) tube

Minimum Volume

Microtainer 0.5 mL • 1 mL whole blood EDTA tube

Other Acceptable Specimens

Whole blood from a full EDTA (tan-top) tube

Instructions

Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect EDTA (lavender-top) tube last. Traumatic draw can introduce thromboplastin and trap WBC and platelets. Refrigeration can precipitate fibrin and trap WBC and platelets.

Note: If drawn with lead testing, EDTA (tan-top) is required.

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Clotted • Specimen quantity not sufficient • Age of specimen

Methodology

Setup Schedule

Set up: Mon-Sat; Report available: 1-2 days

Report Available

SAMEDAY

Reference Range

See Laboratory Report

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

Last Updated: February 27, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.