SF1 is expressed in all steroidogenic tissues, including the adrenal cortex, testicular Sertoli cells, and Leydig cells, ovarian theca, hypothalamus, and anterior pituitary. Nuclear localization of SF1 can be used to distinguish sex cord-stromal tumors (SCST) from non-sex cord-stromal tumors. It is a valuable marker to determine adrenocortical origin and should be run in a panel with other sex cord-stromal tumor markers, such as inhibin and calretinin.
A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen typeorOne (1) unbaked, unstained slide for H&E staining (required) and two to three (2-3) positively charged unstained slides (all cut at 4-5 microns) for each test/antibody orderedBlock and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.