If you have experienced tuberculosis (TB) exposure or have symptoms, Medicare may cover a purified protein derivative (PPD) test. If you don’t have symptoms and haven’t experienced TB exposure ...
Measuring those molecules via a simple blood test could let doctors get women treatment for PPD sooner – possibly even before symptoms appear, the researchers say. Read the full story here.
Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...
ACDS tapped toluene-2,5-diamine sulfate for its dual nature as both an allergen and an alternative to other compounds.
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