How long between tb tests?

Please don't delay or ignore TB symptoms or test schedules like I did when I had a persistent cough. If your doctor has asked for a repeat test, do it immediately without wasting time. Ignoring lung issues can lead to severe damage that takes years to heal.

My family always says to wait a few weeks before doing any repeat medical test to let the body rest. However, for TB tests, it is best to strictly follow what your doctor recommends as timing depends on the specific blood or skin test used. Let the professionals guide you.

When I needed a TB clearance for my college visa, they did the skin test and read it 48 to 72 hours later. If you need a second test, they usually wait a week or two, but it is best to ask the lab guys directly.

If you are doing the skin test, they need to read it within 3 days, so don't vanish after getting poked! If they need to repeat it, they usually wait a week so your arm doesn't look like a pin cushion. Keep it simple and listen to the doc.