No risk factors for tb. 9 weeks pregnant, had qft blood test for tb. results came back positive. can this test show false positive? what's next?scared

Very often: You may have been exposed but not infected. Or this can be a lab error.

Rx if TB: There may be a testing error, but the result during pregnancy does need to be addressed. I would recommend close follow up with your OB, and I have attached the CDC guidelines: http://www.cdc.gov/tb/publications/factsheets/specpop/pregnancy.htm

False positive test: Yes you can have what is called a "false positive test." This means that at one point you where exposed to TB, you where in close contact with someone. The usual next step is to have a chest X-Ray to see if you have TB in your lungs. A false positive test is quite common and nothing need to be done. Please follow up with your doctor.