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MARKER / NAPSIN A

Napsin A antibodies for IHC.

1 verified product currently listed.

Reviewed

What Napsin A staining shows

Napsin A is an aspartic proteinase found in type II pneumocytes and other normal tissues, including renal tubules. Its immunohistochemical staining is cytoplasmic. Tissue-expression studies show that a positive stain is not specific to lung tissue.[1]

Napsin A alongside TTF-1

A tissue-expression study reports Napsin A staining in multiple tumor categories. Lung immunohistochemistry guidance discusses cytoplasmic Napsin A alongside nuclear TTF-1 in selected lung-cancer workups. Neither stain is interpreted in isolation in that setting.[1][2]

Products in the ReagentScope catalogue

The verified Bio SB Napsin A EP205 antibody is the product listed for this marker. Its clone and manufacturer specifications are available in the linked product record.[3]

References and sources

  1. Napsin A Expression in Human Tumors and Normal Tissues (scientific reference)
  2. Best practices recommendations for diagnostic immunohistochemistry in lung cancer (scientific reference)
  3. Bio SB Napsin A EP205 (PI6993) (manufacturer product information)