| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
OSMOLALITY, URINE
Test Code3442
CPT Codes
83935
Preferred Specimen
"Urine (random or 24-hour)
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Minimum Volume
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0.2 mL (Note: This volume does not allow for repeat testing.)
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0.2 mL (Note: This volume does not allow for repeat testing.)
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Instructions
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If 24-hour urine is collected, record total urine volume on the request form.
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If 24-hour urine is collected, record total urine volume on the request form.
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Transport Container
Plastic urine container, no preservative
Transport Temperature
refrigerate
Specimen Stability
14 days
Methodology
"Freezing point depression "
Reference Range
"• 24-hour urine: 300-900 mOsm/kg
• Random urine: 50-1400 mOsm/kg
• After 12-hour fluid restriction: >850 mOsm/kg
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• Random urine: 50-1400 mOsm/kg
• After 12-hour fluid restriction: >850 mOsm/kg
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