Pizza is a common fast food category in the United States, with chains such as Papa John's, Domino's Pizza, Sbarro and Pizza Hut. Menus are more limited and standardized than in traditional pizzerias, and pizza delivery, often with a time commitment, is offered.
1 Leucine crystals are abnormal in urine. 2  Appearance: yellow-brown spheroids with concentric rings around the outer edge and radial striations in the center.  Leucine crystals may be seen in liver disorders in which amino acid metabolism is impaired.
Crystals are identified by their shape, color, and by the urine pH. They may be small, sand-like particles with no specific shape (amorphous) or have specific shapes, such as needle-like. Crystals are considered normal if they are from solutes that are typically found in the urine.