A member asked:

Incidence of false false positive ppd in lupus patients?

2 doctors weighed in across 2 answers

Get tb bood assay: Have a TB blood assay performed---these are more accurate for screening for TB compared to PPD especially when on is on immunosuppressants like prednisone.

Answered 6/10/2014

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Zero: Lupus does not cause falsely positive ppds. If the PPD is positive, have a quantiferon gold test for tb. This is more accurate.

Answered 2/24/2017

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