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Diff Consult by Pathologist (8000101015)
Test Mnemonic:

Diff Consult

Specimen Requirements:

Routine venipuncture; Collect in EDTA (lavender tube). Micro-collection is acceptable.  The specimen should be collected to the appropriate fill volume stated on the collection tube.  The minimum volume required is 90% of the stated tube volume.


EDTA (lavender tube). Micro-collection is acceptable


 Room Temperature 4 hours .  If testing cannot be completed  within 4 hours sample must be refrigerated at 2-8° C.


The peripheral smear is ideally made within 6 hours of collection of the CBC specimen. 

Causes for Rejection:

Clotted; QNS, hemolysis, old specimen, identification error.

Reference Range:


Turnaround Time:

 24 hours (Monday-Friday reporting)


 Manual microscopy; Pathologist nterpretation.


Samples are accepted 24 hours/day at Sample Management, CSW 7.412.


Smear Consult

Clinical Indication:

Review of previously reported abnormal WBC differential or RBC morphologic abnormalities by pathologist.

CPT 4 Code:

 85060. If reflexed additional CPT codes may apply; refer to the reflexed test code for applicable codes. Additional charges may apply.


Special Instructions: CBC with differential must be previously reported in order to request diff consult. Diff consult can be requested by lab add-on to a previously reported  CBC with Differential specimen or by sending an additional specimen after abnormal differential results have been reported.)

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
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