Osmolality, fecal

Alphabetical Test listing

Osmolality, fecal-994

  
Osmolality, fecal
  
994
  
LAB994
  
MSO
  
Fecal Osmolality
  

Distinction of osmotic from nonosmotic secretory diarrhea. A large deficit (>50 mOsm/kg) in the calculated osmolality (twice the sum of the stool sodium and stool potassium) from the measured stool osmolality indicates osmotic diarrhea.

  
Stool, liquid
  
  
15 mL
  

Stool sample must be collected without addition of water

  

Freeze

  

Screw cap plastic container (sterile)

  

Frozen (strict)

Ambient - NO

Refrigerated - NO

  
  • Stool not liquid
  • Stool contaminated with urine
  • Paint can submitted
  • Non-frozen stool
  
LabCorp Burlington (120071): R-NX
  
Mo - Sa
  
1 - 3 days
  

Freezing point depression

  
84999
  
Result 2693-0
  
05/24/2019
  
09/19/2019