Lab Test

Path Consult, Hematology

Pathologist Consult

Test Codes



  • Includes CBC with Differential, Reticulocyte Count, and Pathologist Consultation.
  • Orders for Hematopathologist Consult for morphology review MUST contain an established diagnosis or signs/symptoms. All Path Consult requests must have the applicable diagnosis code entered into EPIC/Laboratory Information System (LIS) upon order entry. While Rule Out (R/O) is often a useful way to communicate your suspicion to the consulting hematopathologist, it is NOT sufficient. 
  • It is also essential when ordering Hematopathologist Consults to avoid using the word "Hemogram". A hemogram is a simple CBC w/o platelet count or differential and is not synonymous with a consult. If a Hematopathologist Consult is required, please so indicate.

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)
See Minimum Pediatric Specimen Requirements for Microtainer® collection.

A copy of the requisition must be sent with the specimen.

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.
  • A slide review to the pathologist must be ordered as a Pathology Consult.
  • In order to ensure compliance with Medicare and other federal regulatory agencies, the Hematology Laboratory has instituted the written policy of not accepting requests for pathologist consultation to review normal CBC/Differential results.
  • Due to the deterioration of morphology on aged specimens, it is not appropriate to add a Path Consult to an EDTA specimen that was collected more than 24 hours prior. All requests for an add-on Path Consult should be re-directed at obtaining a fresh specimen.
  • Duplicate orders for a Path Consult within a 7 day time frame will not be accepted.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 24 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


Farmington Hills Hematology Laboratory
Grosse Pointe Hematology Laboratory
Royal Oak Hematology Laboratory
Troy Hematology Laboratory


Monday – Friday, 7:00 am – 3:30 pm.
Reports available within 24 hours.
Specimens received Friday afternoon through Sunday will have results available the following Monday.

Reference Range

See specific analytes for reference range: CBC with Differential and Reticulocyte Count.

Test Methodology

Complete Blood Count with Differential

Grosse Pointe, Farmington Hills, Royal Oak, Troy:
SYSMEX XN Series or XE Series. Reticulocyte Count 

Grosse Pointe, Farmington Hills, Royal Oak, Troy:
SYSMEX XN Series or XE Series.


By pathologist report.

Clinical Utility

Path Consults are helpful when a hematological abnormality is present and the clinician wants an in-depth interpretation of hematology results by a pathologist before further action is taken. Based upon interpretive findings, a further workup of the patient may be indicated.

CPT Codes

85025, 85046, 80502.


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.


This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.