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Recovery of protein from urine specimens collected in cotton wool.
  1. G C Smith,
  2. C M Taylor
  1. Children's Hospital, Birmingham, Ladywood.


    Cotton wool balls have been used to aid the collection of urine from infants. Concentrations of two urinary proteins, albumin and retinol binding protein, decreased by 40 and 80% respectively within 15 minutes of contact with the cotton wool. Cotton wool balls should not be used when investigating proteinuria.

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