Lab
Urinalysis
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Urinalysis
, Urine examination, Urine Dipstick
Method
Multiple reagent test strip
Urine Microscopic Exam
Technique
Collection
First morning sample
Midstream, clean catch collection
Minimum volume of 3 ml (1 ml for children)
Analyze within 1-2 hours or refrigerate
Preparation of spun urine for microscopy
Start with 10 ml of midstream urine
Centrifuge for approximately 10 minutes (typically at near 2000 rpm)
Discard supernatant
Suspend sediment in 0.3 ml saline or supernatant
Examine under microscopy at 400x magnification
Review at least 10-20 microscopic fields
Labs
Gene
ral Tests
Urine Appearance
(
Urine Color
)
Urine Odor
Urine Specific Gravity
Urine pH
Labs
Kidney
and Urinary Tract Disease Tests
Urine Protein
Urine Blood
Gross Hematuria
Microscopic Hematuria
Labs
Urinary Tract Infection
Tests
Urine Leukocyte Esterase
Urine Nitrite
Labs
Metabolic Disease Tests
Urine Glucose
Urine Ketone
s
Urine Bilirubin
Urine
Urobilinogen
Labs
Urine Microscopic Exam
(based on spun urine)
Urine
Red Blood Cell
s
Microscopic Hematuria
if 3 RBC/hpf or higher
Urine
White Blood Cell
s
Urine squamous epithelial cells
Suggests vaginal contaminant if >5 squamous epithelial cells/hpf
Urine
Bacteria
Urine Cast
s
Urine Crystal
s
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