TB Testing Requirements by Age Group

The CDC technical instructions for immigration medical examinations establish age-based TB testing requirements for children. These requirements reflect the different risk profiles and testing considerations for children at various developmental stages.

It is important to understand that these are general guidelines, and the civil surgeon has clinical discretion to order additional testing based on individual risk factors, symptoms, or history of TB exposure.

Children Under 2 Years of Age

Children under 2 years of age are generally not required to undergo TB blood testing (IGRA) as part of the immigration medical examination. This is because TB infection in very young infants is uncommon, and the IGRA test has not been validated for use in children under 2 years of age.

However, if a child under 2 has known TB exposure, symptoms suggestive of TB disease, or other risk factors, the civil surgeon may order additional evaluation. Parents should inform the civil surgeon of any known TB exposure or relevant health history.

Children Aged 2 to 14 Years

Children between the ages of 2 and 14 may be required to undergo TB testing depending on their country of origin and individual risk factors. The civil surgeon will assess the child's TB risk based on their country of birth, travel history, and any known TB exposure.

For children in this age group who require TB testing, the IGRA blood test is used. If the IGRA is positive, a chest X-ray may be ordered. The civil surgeon will explain the testing process to parents and guardians and answer any questions about the procedure.

Children 15 Years and Older

Children aged 15 and older are subject to the same TB testing requirements as adults. This includes the IGRA blood test as the primary screening method, with a chest X-ray ordered if the IGRA is positive or if clinically indicated. The civil surgeon will conduct a full TB evaluation as part of the immigration medical examination.

Preparing Your Child for the TB Blood Test

The IGRA blood test requires a small blood draw. For children, this can be anxiety-provoking. Here are some tips to help prepare your child:

• Explain the procedure in age-appropriate terms before the appointment
• Bring a comfort item (stuffed animal, favorite toy) to the appointment
• Ensure your child is well-hydrated before the blood draw
• Inform our staff if your child has a history of difficult blood draws
• Our staff is experienced in working with pediatric patients and will make the process as comfortable as possible