CK7

Alias/Synonym: Carcinoma Subset

CPT Code: 88342

Includes:

Specimen Type, Preferred:

Formalin fixed paraffin embedded tissue

Specimen Type, Alternate:

Sample Quantity, Preferred:

1 block

2 slides

Sample Quantity, Minimum:

N/A

Transport Container:

Paraffin block

Unstained slides

Transport Temperature:

Room temperature

Collection Instructions:

Block and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.

Slides should be positively charged and cut at 3-4 microns for each stain/antibody ordered.

Specimen Stability:

N/A

Rejection Criteria:

No liquid specimens.

Uncharged slides

Clinical Significance:

Cytokeratins are intermediate filament proteins present in epithelial cells. They are expressed in a tissue-specific manner in normal organs and the tumors that arise from them. Cytokeratin 7 belongs to the neutral basic type B subfamily of cytokeratins. Its distribution is confined to glandular and transitional epithelia. Cytokeratin 7 has been reported in adenocarcinomas of the lung, breast, endometrium, ovary, thyroid as well as in carcinomas of the bladder and chromophobe renal cell carcinoma. Cytokeratin 7 and Cytokeratin 20 expression have been reported to show characteristic patterns on primary and metastatic lung and colorectal adenocarcinomas.

Limitations:

Turnaround Time:

1 day(s)

Reference Ranges:

N/A

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