False Positive Steroid Test Result with Specific Serum Ingredients

Asked by: wb.silapanupakij On: January 24, 2017 Product Type: Cosmetics

Question

I would like to ask if the following ingredients used in a serum have structures similar to steroids. I performed a steroid test using a test kit from the Department of Science and observed a color change or a positive result. I would like to know what could cause this result.

The ingredients in the serum are:

  • Liquid Azelaic
  • Activated Resorcinol
  • White Cumin

Answer

Analysis of Ingredients and Steroid Test Results

Based on the chemical structures of the ingredients you listed:

  • Liquid Azelaic (Potassium azeloyl diglycinate): This is a derivative of azelaic acid, which is a linear dicarboxylic acid. Its structure is fundamentally different from the multi-ring structure of steroids.
  • Activated Resorcinol (4-Butyl Resorcinol): This compound is a substituted resorcinol, which contains a single aromatic ring. Steroids have a characteristic four-ring structure, making Activated Resorcinol structurally distinct.
  • White Cumin (Tetrahydrocurcuminoids): These are derivatives of curcumin, which have a linear structure with two aromatic rings. This structure is also very different from the steroid skeleton.

None of these ingredients have a chemical structure that is classified as a steroid.

Regarding the positive result from the steroid test kit from the Department of Science, since the ingredients themselves are not steroids, the positive result is likely a false positive. Chemical test kits, especially rapid screening tests, can sometimes react with compounds that are not the target substance but share similar chemical properties or functional groups. This cross-reactivity can lead to a positive result even when no steroids are present. Therefore, the observed color change is most likely due to a non-specific reaction of one or more of the ingredients with the test kit reagents, rather than the presence of steroids.