A microscopic examination is done as a part of a routine urinalysis. It evaluates many parameters like Red Blood Cells (RBCs) White Blood Cells (WBCs) Epithelial Cells Bacteria, Yeast and Parasites Trichomonas Casts CrystalsUrine analysis is one of the most useful laboratory tests as it identifies a wide range of medical conditions including renal damage, urinary tract infections, diabetes, hypertension and drug toxicity.