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A member asked:

If i have a positive ppd but negative chest xray do i need additional blood work ?

3 doctors weighed in across 2 answers
Dr. Charles Davant answered

Specializes in Family Medicine

Possibly: If your doctor is worried you may have TB there are blood tests that may be useful.

Answered 6/10/2014

4.9k views

Thank
Dr. Michael Turner answered

Specializes in Family Medicine

No Blood Work: Blood work is not needed in determining the meaning of a positive PPD (new positive versus historical positive (e.g. Bcg vaccination)) in context of medical history. The negative chest xray indicates no active disease and is a good thing.

Dr Maes agreed

Answered 7/22/2015

4.9k views

Thank

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