A positive tuberculosis screening result on your immigration medical exam normally means a chest X-ray comes next — but pregnancy changes the calculus. If you’re expecting and your civil surgeon just told you that your TB blood test came back positive, you’re likely wondering whether the X-ray is mandatory right now, whether it’s safe, and what happens to your Form I-693 while you sort it out. The short answer is that you have a real choice, and understanding it before your appointment keeps your case moving instead of stalling it.
Why the Chest X-Ray Comes Up in the First Place
Form I-693 requires an Interferon-Gamma Release Assay (IGRA) blood test for tuberculosis screening for most applicants two years of age and older — the older TB skin test (PPD) is no longer the standard tool civil surgeons rely on. A positive IGRA result, a known HIV infection, or any signs or symptoms suggestive of TB triggers a chest X-ray so the civil surgeon can determine whether the infection is latent (inactive) or active. That step applies to every applicant, pregnant or not, because a positive blood test alone doesn’t tell the civil surgeon whether there’s active disease in the lungs.
Pregnancy Doesn’t Cancel the X-Ray — But It Does Add an Option
Applicants sometimes assume pregnancy exempts them from radiologic imaging altogether. It doesn’t. What it adds is a choice: a pregnant applicant with a positive TB screen may choose to postpone the chest X-ray until after delivery, rather than having it performed during pregnancy. This isn’t a loophole — it’s a documented option built into the civil surgeon’s TB screening protocol specifically because of the applicant’s condition.
The trade-off is timing, not safety. Postponing the X-ray also postpones completion of Form I-693, because the civil surgeon cannot sign off on the form until the X-ray has been performed, read, and any necessary follow-up finished. If your adjustment-of-status case has an interview date, a pending Request for Evidence, or another filing deadline attached to it, that delay is worth discussing with your immigration attorney before you decide. There’s no universal right answer here — it depends on how far along the pregnancy is, how close the deadline is, and what your obstetrician advises.
Abdominal Shielding Is No Longer the Standard Practice
If you’re leaning toward proceeding with the X-ray rather than waiting, it helps to know what current guidance actually says about radiation exposure. Lead abdominal shielding — the lead apron many people picture when they think of an X-ray during pregnancy — is no longer recommended or required for the immigration medical exam, for any applicant, pregnant or not. Shielding can actually interfere with proper positioning and image quality without meaningfully reducing the already-minimal scatter radiation a chest X-ray produces, which is why current radiologic guidance has moved away from it. If a civil surgeon does proceed with imaging a pregnant applicant, they’re expected to document informed consent using their own consent process, since there’s no single standardized USCIS consent form for this specific situation.
What the Civil Surgeon Can Finish While You Decide
Choosing to postpone the X-ray doesn’t mean your exam grinds to a halt. A civil surgeon can generally complete every other component of the medical exam in the same visit or a follow-up one:
- Medical history and physical exam — the standard review that doesn’t involve any imaging.
- Vaccination record review — confirming which of the required immunizations you already have documentation for, and which are still outstanding.
- Other required laboratory testing — the additional blood work and screenings that aren’t dependent on the TB workup.
- Class A/B condition screening — for conditions unrelated to tuberculosis.
What the civil surgeon cannot do is finalize and sign Form I-693 while the TB question is still open. The form is meant to certify a complete picture, and an unresolved chest X-ray leaves a gap in that picture that no amount of paperwork elsewhere can close.
After the X-Ray: Two Different Outcomes
Once the chest X-ray happens — whether now or after delivery — the result determines what’s left to do. If the X-ray is clear, meaning you have latent TB infection rather than active disease, treatment is not required for immigration purposes, and the civil surgeon can complete and sign Form I-693 without further delay. If the X-ray instead suggests active tuberculosis, the applicant is referred to the local health department for additional testing and treatment, and the I-693 cannot be finalized until that treatment is completed — a materially longer process that applies regardless of pregnancy status.
That distinction is worth sitting with before deciding whether to postpone. Most applicants who reach the X-ray stage with a positive TB blood test turn out to have latent infection, not active disease, which means the imaging itself is often the last real hurdle standing between a positive screen and a completed form. Talking through your specific timeline and health history with your civil surgeon and your obstetrician — together, if possible — is the most reliable way to decide whether proceeding now or waiting until after delivery makes more sense for your case.