Although these are the most common places for melanomas to appear, they can appear anywhere on the skin including inside the oral cavity
10 FDA Regulatory Note: The FDA determined that NAC is excluded from the statutory definition of a 'dietary supplement' under the FD&C Act because it was authorized as an active pharmaceutical ingredient (the antidote for acetaminophen overdose, sold as Mucomyst) before it was widely marketed as a supplement
Jacque N, Ronchetti AM, Larrue C, Meunier G, Birsen R, Willems L, Saland E, Decroocq J, Maciel TT, Lambert M, et al
Each swab should be used once and then discarded
A fixed stock concentration or solution-storage period should not be stated unless it has been supported by solubility and stability data for the exact salt form and batch
doi:10.1517/14712598.2012.634793 Esposito S, Deventer K, Goeman J, Van der Eycken J, Van Eenoo P