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Detection of formaldehyde in urine samples

  • US 8,012,761 B2
  • Filed: 12/14/2006
  • Issued: 09/06/2011
  • Est. Priority Date: 12/14/2006
  • Status: Expired due to Fees
First Claim
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1. A method for detecting formaldehyde in a urine sample, the method comprising:

  • catching a flow of urine from an individual in an absorbent article, the absorbent article comprising a device that contains a substrate, the substrate defining a sample application zone for receiving the urine and a discrete detection zone located downstream from the sample application zone and within which is located a colorant, wherein the urine contacts the sample application zone of the substrate and flows therethrough to reach the colorant within the detection zone, and wherein the colorant reacts directly with formaldehyde to produce a visible spectral response; and

    visually detecting the spectral response.

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