CD7 by Immunohistochemistry
Also known as: CD7 IHC
Use
CD7 immunohistochemical staining is used as a technical (stain and return) service to detect CD7 antigen expression in tissue or cellblock specimens. CD7 is expressed on T cells and natural killer cells, and aberrant loss of CD7 expression may assist in diagnosing T‑cell lymphomas.
Special Instructions
Submit via electronic request or use ARUP Immunohistochemistry Stain Form (#32978) if electronic ordering is unavailable. Transport specimens in ARUP tissue transport kit (supply #47808).
Limitations
Technical service only; no interpretive (pathologist) read is included. Specimens must be formalin‑fixed, paraffin‑embedded or cellblocks; slides must be positively charged. Do not oven bake precut slides. Frozen specimens are unacceptable. Unacceptable conditions include depleted or non‑representative tissue.
New York Approved
Methodology
Immunoassay (IHC)
Biomarkers
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Formalin fix (10 percent neutral buffered formalin) and paraffin embed specimen (cells must be prepared into a cellblock). Transport tissue block or 5 unstained (3- to 5‑micron thick) positively charged slides in ARUP tissue transport kit (#47808). (Min: 2 slides). If sending precut slides, do not oven bake.
Storage Instructions
Protect paraffin block and/or slides from excessive heat; ship in cooled container during summer months.
Causes for Rejection
Depleted specimens; non‑representative tissue type.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Indefinitely |
| Refrigerated | Indefinitely |
| Frozen | Unacceptable |