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  • 232R-1 - Calretinin (SP13) Rabbit Monoclonal Antibody

232R-1 Sigma-Aldrich

Calretinin (SP13) Rabbit Monoclonal Antibody

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, CA1-CAL, Cell Marque Antibodies, Cytopatholgy,
conjugate   unconjugated
clone   SP13, monoclonal
biological source   rabbit
application(s)   immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:25-1:100
species reactivity   human
form   buffered aqueous solution
shipped in   wet ice
storage temp.   2-8°C
packaging   vial of 0.1 mL concentrate (232R-14)
  vial of 0.5 mL concentrate (232R-15)
  bottle of 1.0 mL predilute (232R-17)
  vial of 1.0 mL concentrate (232R-16)
  bottle of 7.0 mL predilute (232R-18)
antibody form   culture supernatant
isotype   IgG1
antibody product type   primary antibodies
description   For In Vitro Diagnostic Use in Select Regions (See Chart)
mfr. no.   Cell Marque
concentration   1-5 μg/mL (predilute)
  50-250 μg/mL (concentrate)
control   mesothelioma
visualization   cytoplasmic, nuclear


General description

Calretinin is a 29 kDa calcium-binding protein thought to play a role in the cell cycle. Anti-calretinin has been shown to be useful in differentiating mesothelioma from adenocarcinomas from the lung and other sources. The sensitivity of anti-calretinin in distinguishing reactive mesothelial cells from adenocarcinoma cells is 100%, and the specificity is up to 80%. Light, focal, cytoplasmic staining of adenocarcinoma cells may be seen in 10 to 30% of cases. Anti-calretinin has also demonstrated utility in differentiating adrenal cortical neoplasms (+) from pheochromocytomas (-). Calretinin has also been useful in diagnosing granulosa cell tumor of the ovary amongst its mimics. Other ovarian tumors that stain with calretinin are Sertoli-Leydig cell tumor, Sertoli cell tumor, Leydig cell tumor, and sex cord tumor with annular tubules, as well as steroid cell tumor.9

Physical form

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

Legal Information

Cell Marque is a trademark of Sigma-Aldrich Co. LLC


Calretinin Positive Control Slides, Product No. 232S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

Other Notes

For Technical Service please contact: 800-665-7284 or email: service@cellmarque.com

Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis (COA)

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Protocols & Articles


Antibody Basics

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232S Calretinin Positive Control Slides, suitable for immunohistochemistry (formalin-fixed, paraffin-embedded sections) 

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