II. Sample preparation

  1. Obtain fresh urine sample
  2. Centrifuge 10-15 ml at 1500 to 3000 rpm for 5 minutes
  3. Decant supernatant and resuspend remainder of urine
  4. Place 1 drop of urine on slide and apply cover slip

III. Examination

  1. Urine Cells
    1. Urine White Blood Cells
      1. Normal <2/hpf in men and <5/hpf in women
    2. Urine Red Blood Cells
      1. Normal <3/hpf
      2. Dysmorphic RBCs suggest glomerular disease
    3. Epithelial cells
      1. Transitional epithelial cells are normally present
      2. Squamous epithelial cells suggest contamination
      3. Renal tubule epithelial cells suggest renal disease
  2. Bacteria
    1. Five Bacteria per hpf represents 100,000 CFU/ml
    2. Diagnostic for Urinary Tract Infection
      1. Men: Any Bacteria
      2. Women: 5 or more Bacteria per hpf
  3. Urine Crystals
    1. See Urine Crystals
  4. Urine Casts
    1. See Urinary Cast

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Ontology: Microscopic urinalysis (C0430397)

Concepts Laboratory Procedure (T059)
SnomedCT 393892003, 392936005, 127800008
CPT 81015
LNC LP21253-7
English microscopic urinalysis, urinalysis microscopic, urine microscopy, Microscopy of urine, Urine Microscopy, Microscopic examination of urine specimen, Urine microscopy (procedure), Urine microscopy, Microscopic urinalysis (procedure), Microscopic urinalysis
Spanish examen microscópico de espécimen de orina, análisis de orina microscópico (procedimiento), análisis de orina microscópico