ERBB2 (HER2) (HercepTest)™ by Immunohistochemistry
Additional Technical InformationAdditional Technical Information

Immunohistochemistry Stain Form Recommended  (ARUP form #32978)Immunohistochemistry Stain Form Recommended (ARUP form #32978)

Ordering Recommendation
Submit With Order
1-3 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Tissue or cells.  
Specimen Preparation
Formalin fix (10 percent neutral buffered formalin) and paraffin embed specimen (cells must be prepared into a cellblock). Protect paraffin block and/or slides from excessive heat. Transport tissue block or 5 unstained (3- to 5- micron thick sections), positively charged slides in a tissue transport kit (ARUP supply #47808) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800)522-2787. (Min: 2 slides) If sending precut slides, do not oven bake.  
Storage/Transport Temperature
Room temperature. Also acceptable: Refrigerated. Ship in cooled container during summer months.  
Unacceptable Conditions
Specimens submitted with non-representative tissue type. Depleted specimens.  
IMMUNOHISTOCHEMISTRY ORDERING AND SUBMISSION DETAILS: Submit electronic request. If you do not have electronic ordering capability, use an ARUP Immunohistochemistry Stain Form (#32978) with an ARUP client number. For additional technical details, please contact ARUP Client Services at (800)522-2787.  
Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable  
Reference Interval
Interpretive Data
This test code is handled as "Stain and Return." For stain with interpretation, refer to ERBB2 (HER2/neu) (HercepTest) with Interpretation by Immunohistochemistry, Tissue (ARUP test code 0049174). To request a consultation, submit the pathology report, all associated case materials (clinical history, blocks, slides, etc.) with the Anatomic Pathology requisition form (form #32960) in place of the Immunohistochemistry form.
CPT Code(s)
Component Test Code*Component Chart Name
2007333ERBB2 (HercepTest) IHC Reference Number
2007334ERBB2 (HercepTest) IHC Result
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • c-erbB2Hercept IHC
  • ERBB2 Hercept IHC
  • HER-2/neu Hercept IHC