Days Set Up
Daily, 24 hours
Analytic Time

48 hours

Soft Order Code

Test Updated:


Pathologist Review of Peripheral Blood Slide

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All specimens should be accompanied by a requisition.

Submitting Specimens

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Test Overview

Test Methodology


Test Usage

To request a pathologist, MD, professional consult to assess abnormal hematological findings or to rule out specific concerns.

Reference Range

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in a lavender top EDTA K2 Vacutainer® tube or EDTA K2 Microtainer® tube. Send intact within 8 hours of collection if stored at room temperature or if stored refrigerated. Two unstained peripheral smears made from the specimen at the time of collection may be submitted concurrently if transport cannot be done within 8 hours. Then the specimen must be received within 24 hours kept at room temperature, or 48 hours if refrigerated. The request for Pathologist Review must be accompanied by a reason for review. If no reason is provided, a peripheral blood smear will be prepared and will be available in the Hematology Laboratory for 30 days. Please contact MLabs within 30 days.NOTE: Blood smear preparation cannot be done on specimen more than 8 hours old due to increased cellular degeneration. This may result in the differential and pathologist review request being canceled.

Lavender Top Tube
Normal Volume
3 ml EDTA K2 whole blood in Vacutainer® tube or 500 µl EDTA K2 whole blood in Microtainer® tube
Minimum Volume
1 ml EDTA K2 whole blood in Vacutainer® tube or 300 µl EDTA K2 whole blood in Microtainer® tube

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.