Which staining method is utilized to identify white blood cells, epithelial cells, and casts?

The Steihimer-Malbin staining method is specifically designed for the identification of white blood cells, epithelial cells, and casts in urine sediment. This stain enhances the visibility of these cellular components, allowing for clear differentiation and assessment under a microscope. The unique properties of the Steihimer-Malbin stain facilitate the identification of various cellular elements that may be present in the urine, vital for diagnosing potential renal or urinary tract issues.

While the Hansel stain is typically employed to identify eosinophils, the Toluidene blue stain has applications in detecting mast cell granules and other cellular components, but it is not primarily used for the comprehensive identification of cells in urine samples. The term "bright field" refers to a microscopy technique rather than a specific staining method, which does not enhance cellular visualization in the same way as the staining techniques mentioned.