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CDX2, IHC without Interpretation
Test Code90203
CPT Codes
88342
Preferred Specimen
1 formalin fixed paraffin block
Minimum Volume
1 block
Other Acceptable Specimens
3 Slides Unstained, positively charged slides IHC Specimen Transport Kit
Instructions
Please include surgical pathology report.
Transport Container
IHC Specimen Transport Kit
Transport Temperature
Room temperature
Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Do Not Freeze
Refrigerated: Indefinitely
Frozen: Do Not Freeze
Methodology
Immunohistochemistry
Setup Schedule
Set up: Mon-Fri Morning; Report available: Next day
Reference Range
See Laboratory Report
Clinical Significance
CDX-2, a nuclear transcription factor that is expressed in colonic epithelium, is useful in distinguishing metastatic carcinoma of colorectal origin from other tumors. However, its expression may be lost in advanced colorectal tumors and is also expressed by some mucinous tumors of other sites.