What is DIF test related to skin biopsy?

Answer 1

Direct Immunofluorescence: Staining cells with antibodies directly linked to fluorochromes is known as direct immunofluorescence (DIF). Multiple antibodies may be detected on one sample.

Answer 2

The DIF (direct immunofluorescence) test on a skin biopsy involves staining the tissue sample with fluorescently labeled antibodies to detect the presence and localization of specific proteins (such as antibodies or immune complexes) in the skin. This test helps in diagnosing autoimmune skin conditions such as pemphigus vulgaris, bullous pemphigoid, and lupus erythematosus.