Presumptive Colour Tests

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Created by
Laura Joyce

Cards (21)

  • The test is used to detect the presence of alkaloids, such as morphine.
  • Alkaloid-positive samples turn red or pink.
  • What colour does diamorphine and morphine turn in the Marquis test?
    Diamorphine: dark purple
    Morphine: mave or purple
  • What colour does Codeine turn in the Marquis Test
    Blue/purple
  • What colour does amfetatmines and methamfetamines turn in the Marquis test
    Orange
  • What colour does MDA and MDMA turn in the Marquis Test
    Blue / purple
  • What colour do benzodiazepines turn in the Marquis test
    No colour change
  • What colour does Cocaine turn in the Marquis Test

    Slight pink or orange
  • What colour does LSD turn in the Marquis Test
    Green/black
  • What colour does diamorphine and morphine turn in the Mandalins Test
    Blue/grey
  • What colour does codeine turn in the Mandalins Test

    Olive green
  • What colour does amfetamines and methamfetamines turn in the Mandalins Test
    No colour change
  • What colour does MDA and MDA turn in the Mandalins Test
    No colour change
  • What colour do benzodiazepines turn in the Mandalins Test
    No colour change
  • What does the Duquenois Levine Test for and what colour does it turn
    Cannabis
    Purple
  • What colour does diamorphine and morphine turn in the Cobalt Isothiocyanate Test
    Diamorphine: blue
    morphine: no change
  • What colour does codeine turn in the Cobalt Isothiocyanate Test
    No change
  • What colour does cocaine turn in the Cobalt Isothiocyanate Test
    Blue
  • What colour does amfetamines turn in the Cobalt Isothiocyanate Test
    No change
  • What colour does MDA and MDMAturn in the Cobalt Isothiocyanate Test
    No change
  • What colour do benzodiazepines turn in the Cobalt Isothiocyanate Test
    No change, except temazepam which turns blue