Lab

Split 24 Hour Urine Protein

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Split 24 Hour Urine Protein

  • Indication
  1. Suspected Orthostatic Proteinuria
  • Technique
  1. See 24 hour Urine Collection
  2. Start collection after first morning void (e.g. 7 am)
  3. Bottle 1
    1. Collect daytime urine sample over first 16 hours
    2. Void immediately before bedtime
  4. Bottle 2
    1. Collect 8 hour overnight (supine) specimen
    2. Include first morning void in collection
  • Interpretation
  1. Glomerular disease: Bottle 2 with >50 mg Protein
  2. Orthostatic Proteinuria: Bottle 2 with <50 mg Protein