For Immigration Attorneys6 min readUpdated July 2026

How Should Immigration Attorneys Handle Cases With Abnormal Lab Results?

Quick Answer

When a client has abnormal lab results on Form I-693, the civil surgeon will document the findings and may require follow-up testing or treatment. Attorneys should understand what the findings mean, advise clients on next steps, and be prepared for potential delays in adjudication or the need for a waiver.

What Abnormal Lab Results Mean for Form I-693

The immigration medical examination includes laboratory testing for tuberculosis (TB), syphilis, and gonorrhea. Abnormal results on any of these tests are documented by the civil surgeon on Form I-693 and may affect the adjudication of the I-485.

The significance of abnormal results depends on the specific finding. Some findings — such as latent TB — are common and do not prevent approval, though they may require treatment documentation. Others — such as active TB or untreated syphilis — are more serious and may constitute grounds of inadmissibility.

The Civil Surgeon's Role

When abnormal lab results are found, the civil surgeon documents the findings on Form I-693 and classifies them as Class A (serious, potentially inadmissible) or Class B (less serious, not inadmissible but requiring follow-up).

Class A conditions include communicable diseases of public health significance, such as active TB or untreated syphilis. Class B conditions include conditions that are less serious or that have been treated, such as latent TB or a history of substance use disorder in remission.

Treatment Requirements and Documentation

For Class A conditions, treatment is typically required before the I-485 can be approved. The civil surgeon may require documentation of treatment completion before finalizing Form I-693.

For Class B conditions, treatment may be recommended but is not always required for approval. However, USCIS may request documentation of follow-up care or treatment as part of the adjudication process.

Waiver Considerations

Some Class A conditions are waivable with Form I-601. The availability of a waiver depends on the specific condition and the applicant's qualifying relationships. Attorneys should evaluate whether a waiver is appropriate and, if so, begin gathering the necessary documentation.

Not all Class A conditions are waivable. For example, active TB that has not been treated is not waivable until treatment is completed. Consult with a physician experienced in immigration medical matters to understand the options.

Timeline Impact

Abnormal lab results can significantly delay the adjudication of an I-485. Treatment for some conditions — such as latent TB — can take 3–9 months. Attorneys should advise clients of potential delays and set realistic expectations for case timelines.

Frequently Asked Questions

Have your questions answered? Book your exam today.

Costa Mesa · Mon–Sun 8 AM–8 PM · No referral needed

Fast · Convenient · Secure Online Scheduling

Ready to Schedule Your Immigration Medical Exam?

Our USCIS-designated civil surgeon is ready to help. Book your appointment online or call us today.

Book Online 24/7
Instant Confirmation
USCIS-Designated Civil Surgeon