TB Test

Just finalising the paperwork for my wife's spouse visa application.
Her TB test certificate has just been issued today.

As I understand it this is valid for 6 months, and it has to be valid when she arrives in the UK.

My question is what about when she is living in the UK on leave to remain, will she always need a valid TB certificate whenever we travel abroad and return?

Or does it only need to be valid on her first ever arrival?

the certificate is for her entry clearance and is not needed when she enters again on the same.

The TB test only needs to be valid at the time of submitting your application.