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Alternate Test Names:
Actin, muscle specific
Identifies smooth, skeletal, and cardiac isoforms of actin. HHF35 can be employed as a marker of leiomyosarcomas, rhabdomyosarcomas, and tumors showing myoepithelial differentiation.
Subcellular Localization: Cytoplasmic
Disease State: Spindle Cell Tumors / Sarcoma Subtyping
CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)
Turnaround Time: Within 1-2 business days of receipt
Schedule: Monday - Friday
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR -
• 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm