The only test to show positive and active tb is to show tb bacteria in samples like sputum, depending on your symptoms. To some extend, we can say from xrays and scans as well, if it's active or healed.
If you did something called a mantoux test or quantiferon gold test, it shows all tb you had ( if you were exposed and treated, it would still turn to be positive) .
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connect if you have symptoms like fever and you don't feel like eating or you don't gain weight.
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