I-485 TB Test Requirements: Everything You Need to Know (2026 Guide)

Applying for a marriage-based green card is an exciting journey, but it involves a lot of paperwork and a few mandatory health checks. One of the most common sources of anxiety for applicants is the immigration medical exam—specifically, the i-485 tb test requirements.

You might be asking: Why do I need a Tuberculosis (TB) test? What happens if it comes back positive? Will this ruin my chances of getting a Green Card?

Take a deep breath. At Greenbroad, we help thousands of couples navigate the immigration process every year. While the medical requirements are strict, they are also very straightforward once you understand the rules.

This comprehensive i-485 guide will break down exactly what USCIS requires regarding TB testing in 2026, how the process works, and what to do if you encounter hiccups along the way.

Why Is a TB Test Required for the I-485 Form?

The United States Citizenship and Immigration Services (USCIS) requires all green card applicants to prove that they are not “inadmissible” on public health grounds. This is done through the Report of Medical Examination and Vaccination Record (Form I-693).

There are four main health-related grounds for inadmissibility:

1. Communicable diseases of public health significance (this includes Tuberculosis).
2. Failure to show proof of required vaccinations.
3. Physical or mental disorders with associated harmful behavior.
4. Drug abuse or addiction.

Tuberculosis (TB) is a serious infectious disease that mainly affects the lungs. Because active TB is contagious, USCIS wants to ensure that new immigrants are not bringing active infections into the country.

However, it is important to distinguish between having TB disease (active and contagious) and Latent TB Infection (sleeping and not contagious). We will cover this in detail later, but know this: Having latent TB is very common and generally will not prevent you from getting a green card.

Understanding I-485 TB Test Requirements

When you are preparing how to fill i-485 (Application to Register Permanent Residence or Adjust Status), you must also plan for your medical exam. The i-485 tb test requirements are specific and must be followed exactly to avoid delays.

Who Needs the Test?

According to the Centers for Disease Control and Prevention (CDC) and USCIS guidelines:

• Applicants aged 2 years and older: Must have a TB screening test.
• Applicants under 2 years: Generally do not need a test unless there is a known exposure to TB or they show signs of the disease.

The Move to Blood Tests (IGRA)

In the past, many people were familiar with the Tuberculin Skin Test (TST), where a doctor injects fluid under your skin and checks for a bump days later.

However, current guidelines strongly prefer—and often mandate—the Interferon-Gamma Release Assay (IGRA). This is a blood test.

Why the blood test? Many immigrants have received the BCG vaccine in their home countries (a TB vaccine common outside the US). The BCG vaccine can cause a “false positive” on a skin test. The IGRA blood test is much more accurate and does not react to the BCG vaccine. This saves many applicants the stress of a false alarm.

The Form I-693 Process: Step-by-Step

Navigating the medical exam is a crucial part of your i-485 guide. Here is how the process works from start to finish.

Step 1: Find a Designated Civil Surgeon

You cannot go to your regular General Practitioner (GP) or family doctor for this exam (unless they happen to be on the USCIS list). You must find a doctor authorized by USCIS, known as a Civil Surgeon.

• Visit the official USCIS Find a Doctor page.
• Enter your zip code to find authorized doctors near you.

Step 2: Schedule the Appointment

When you call, tell them you need an “Immigration Medical Exam for Form I-693.” Ask about the price immediately. Insurance generally does not cover this exam. Prices in 2026 typically range from $200 to $600, depending on your location and the tests required.

Step 3: The Exam and TB Test

Bring your passport, vaccination records, and a copy of Form I-693 (latest edition) to the appointment.

The doctor will draw blood for the IGRA TB test (for applicants 2 and older) and test for syphilis and gonorrhea (for applicants 18-44). They will also check your vaccination history.

Step 4: Receiving Results

It usually takes 2 to 4 days to get blood test results back.

• If Negative: The doctor will sign off on the form.
• If Positive: You will be required to get a chest X-ray (at an additional cost) to check for active TB in your lungs.

Step 5: The Sealed Envelope

Once everything is clear, the doctor will give you a sealed envelope containing your completed Form I-693 and test results.

What Happens if My TB Test is Positive?

This is the number one fear regarding i-485 tb test requirements. A positive result on the blood test can be scary, but in the vast majority of cases, it is not a dealbreaker.

Latent TB vs. Active TB

• Latent TB: The bacteria is in your body, but it is “asleep.” You do not feel sick, you have no symptoms, and you cannot spread it to others.
• Active TB: The bacteria is active. You usually have a cough, fever, or weight loss, and you can spread it to others.

The Chest X-Ray Requirement

If your blood test is positive, the Civil Surgeon is required to send you for a chest X-ray.

Scenario A: The X-Ray is Clean (Class B TB) If the X-ray shows your lungs are clear and you have no symptoms, you are diagnosed with Latent TB Infection (Class B).

• The Result: The doctor will note this on Form I-693.
• The Outcome: You CAN proceed with your Green Card application. Class B TB does not make you inadmissible. The doctor may recommend treatment, but it is not mandatory for immigration purposes to finish treatment before you file.

Scenario B: The X-Ray Shows Abnormalities (Class A TB) If the X-ray shows signs of TB, or if you have symptoms, you may be classified as having Class A TB.

• The Result: You will be referred to the local health department for further testing (sputum smears).
• The Outcome: If you have Active TB, you cannot get your Green Card yet. You must complete a course of treatment first. Once the health department certifies you are no longer contagious, the Civil Surgeon can sign your I-693, and your application can proceed.

Real-World Example: Alejandro’s Story

Alejandro, from the Philippines, applied for a marriage green card. He had received the BCG vaccine as a child. His blood test came back positive. He was terrified his application would be denied.

He went for the required chest X-ray. The X-ray was completely normal. The Civil Surgeon marked “Class B: Latent TB” on his form. Alejandro included the sealed envelope with his application. Result: His green card was approved without issue.

Timing: When Should I Get the TB Test?

Timing is everything in immigration. USCIS policy on the validity of Form I-693 has changed over the years, so it is vital to look at 2026 rules.

The “Valid at Time of Adjudication” Rule

As of late 2023/2024 (and continuing into 2026), USCIS policy states that a Form I-693 signed by a civil surgeon is generally valid indefinitely regarding the “expiration” date, provided it was signed after November 1, 2023.

However, there are two main strategies for submitting it:

Option 1: Concurrent Filing (Recommended) You submit the sealed medical exam envelope together with your initial I-485 application package.

• Pros: It can speed up the process. USCIS has everything they need to make a decision, potentially waiving the interview.
• Cons: You must pay for the exam upfront.

Option 2: Bring it to the Interview You file the I-485 first, wait for the interview notice, get the exam done, and bring the envelope to the interview.

• Pros: Delays the cost of the exam.
• Cons: If USCIS decides to waive your interview (which is happening more often in 2026), they will have to send you a “Request for Evidence” (RFE) asking for the medical exam. This pauses your case and adds weeks or months to the processing time.

Cost of the Medical Exam

While the filing fee for the i-485 form (currently around $1,440) goes to the government, the medical exam fee goes directly to the doctor. USCIS does not regulate these fees.

• Average Cost: $200 – $600.
• Variability: Costs vary wildly by city and doctor.
• Shopping Around: We highly recommend calling at least 3 different Civil Surgeons in your area to compare prices. Ask: “What is the total cost including the blood test and vaccination review?”

Hidden Costs:

• Vaccinations: If you are missing shots (MMR, Polio, Tetanus, Hepatitis B, COVID-19, Flu), the doctor will charge you for them.
• Tip: If you have insurance, go to your local pharmacy (CVS, Walgreens) or primary care doctor to get your missing vaccines covered by insurance before your immigration exam. Bring the proof to the Civil Surgeon to save money.

Common Mistakes to Avoid

When dealing with i-485 tb test requirements, avoid these common pitfalls:

1. Using the Wrong Doctor: Never use a non-Civil Surgeon. Your exam will be rejected.
2. Opening the Envelope: If you open the sealed envelope, it is void. You must pay for a new exam.
3. Refusing the X-Ray: If you test positive for TB (even if you think it’s false), you must get the X-ray. Refusing it means your application will be denied.
4. Missing the Signature: Ensure the doctor signed and dated the form. (You can check the copy they give you).
5. Expired Forms: Ensure the doctor is using the current edition of Form I-693.

Conclusion

Meeting the i-485 tb test requirements is a critical step in your journey toward permanent residence. While the thought of medical exams and potential positive results can be stressful, remember that the system is designed to identify active health threats, not to penalize you for common, latent conditions.

By finding a designated Civil Surgeon, ensuring you get the IGRA blood test, and following up with an X-ray if necessary, you can check this requirement off your list with confidence.

Disclaimer: This article provides general information about the I-485 TB test requirements and is not legal advice. Immigration policies and fees change frequently. If you have a complex medical history or legal concerns (such as criminal records or previous immigration violations), we strongly recommend consulting with a qualified immigration attorney.