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A member asked:

What is injected in your arm when getting a tb skin test and is it safe for the baby to get the test when 21+ weeks pregnant?

2 doctors weighed in across 2 answers
Dr. John Chiu answered

Yes: It is called PPD for TB testing and there is no known contraindication for getting one unless you were tested positive before.

Answered 8/12/2014

3.8k views

Thank
Dr. Marc Goldhagen answered

Specializes in Occupational Medicine

PPD: Purified protein derivative which are TB proteins which, if you have a previous exposure to TB will cause a reaction called a "wheel." Your baby in utero will be safe as the proteins will stay right where they put them and not cross the placenta.

Answered 8/12/2014

3.8k views

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Related Questions

A member asked:

Could a TB skin test be false positive if the needle was to deep? My arm bled after the test and now that its healing I have a large purple bruise

8 doctors weighed in across 4 answers

A member asked:

Why do I still have a red dot on my arm from a TB skin test two weeks later?

A doctor has provided 1 answer

A member asked:

Dr martin raffi had PPD test last year for immigration request. Not sure PPD or tstthey inject into skin. Place on my hand red. Make TB reactive?

8 doctors weighed in across 2 answers

A member asked:

I got a TB skin test a week ago and I still have a red bump on my arm. They told me it was negative. I was wondering if this is normal?

A doctor has provided 1 answer

A member asked:

If Ive been smoking weed constantly will that show up in a TB skin test? Because Ive heard its only injected drugs that can be detected but other sources say drug abuse can be detected?

5 doctors weighed in across 3 answers

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