Which of the following is a feature of Leucine Crystals?

• A. Round with long projections
• B. Colorless to yellow-brown
• C. Amber color
• D. Hexagonal plates

Answer: (B)

Leucine crystals are known for their specific features, one of which is their color. They typically appear colorless to yellow-brown and can vary in coloration due to the presence of certain pigments or impurities. This characteristic makes it easier to identify them under microscopic examination, where the color can play a significant role in differentiation from other types of crystals. Additionally, leucine crystals are associated with the presence of leucine, an amino acid, and can indicate certain metabolic conditions when found in urine samples.

Other characteristics, while relevant for various types of crystals, do not apply to leucine specifically. For instance, shapes like round with long projections, amber color, or hexagonal plates may refer to different types of crystals entirely, such as those found in urinalysis but not specifically for leucine. Understanding the unique features of leucine crystals helps in the accurate interpretation of lab results in clinical pathology.