Test Directory

CD20

Clone:

L26 (Spokane, Bellevue)

L27 (Richland)

Application:

Cytoplasmic and cell membrane positivity in benign and malignant B-lymphocytes plus many myeloid cells, and occasional monocytes. Positive in L.P. Hodgkin's

Specimen Type:

Formalin-fixed, paraffin-embedded tissue blocks (FFPE). If tissue blocks are not available, unstained slides are acceptable (please submit 1-2 slides per antibody to be tested, cuts must be 4 microns thick).

Collection Procedure:

Tissue removed during a surgical procedure and placed in 10% NBF soon after removal from the patient. Appropriate tissue for requested staining.

Required Information:

Complete the Incyte Diagnostics requisition with the patient's demographics and relevant clinical history.

Specimen Stability:

Ambient: Indefinite

Unacceptable Specimen:

Slides or paraffin blocks with no tissue remaining. Samples fixed in fixatives other than 10% neutral buffered formalin. Paraffin blocks that have been overheated or frozen.

Department:

Histology

Method:

IHC, Ventana Ultra Stainer (Spokane, Bellevue)

IHC, BioCare/ULTRA (Richland)

Turnaround:

12 business days from receipt

Performed:

MondaySaturday

Retention:

Blocks: 10 years
Slides: 10 years

CPT Code:*

88341
88342

*The listed CPT codes are for reference use only. Final coding is based on CPT guidelines and individual circumstances.

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