Le khithi isetyenziselwa ukufumanisa umgangatho we-in vitro kwizigulana ezineempawu/iimpawu ezinxulumene nesifo sephepha okanye ezingqinwe luvavanyo lwe-X-reyi losulelo lwesifo sephepha se-mycobacterium kunye nemizekelo yesikhohlela yezigulana ezifuna ukuxilongwa okanye ukuxilongwa ngokwahlukileyo kosulelo lwesifo sephepha se-mycobacterium.