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