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A 28-year-old female asked about a 29-year-old female:

if the site of tb injection is bleeding right after, is it more likely to be positive?how many weeks is the skin going to be red?it's been a week now.

1 doctor answer2 doctors weighed in
Dr. Jeffrey Fromowitz
Dermatology 19 years experience
Variable: Bleeding right after does not indicate likely positive PPD results. Redness may take several weeks to resolve. Keep the area clean and protected from the sun.

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Last updated Jun 10, 2014

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