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  • The Wood's lamp can detect areas of skin that are pigmented or depigmented and can also detect fluorescence. Normal healthy skin appears as a blue color but may show white spots when the skin is thick and yellow when it is oily. Purple spots indicate dryness or dehydration
  • This test may be done to detect the presence of a fungal scalp or skin infection. A Wood's lamp emits ultraviolet light and can be a diagnostic aid in determining if someone has a fungal or bacterial infection on the skin or scalp.
  • Wood's lamp produces a peak wavelength of 365nm, whereas commercially available blacklight sources can have peak wavelengths of 375nm, 385nm, or 395nm. The longer the peak UV wavelength, the more visible light will be produced, which will result in less fluorescence.
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