Test Directory

Factor VIII
Clone: polyclonal
Application: Expressed in endothelial cells and megakaryocytes
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 Info: Patient's full name, DOB, Soc Sec #, Date of specimen collection, Ordering MD
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: Ventana
Turn Around: 24-48 hours
Performed: Mon-Sat
Retention: Blocks -10 years, Slides - 10 years
CPT Code: 88342 (The listed CPT codes are for reference use only. These codes should not direct billing practices and may not accurately reflect current billing practices.)

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