Alveolar lavage fluid did not see fungi suggests that there is no fungal infection, there is no good or bad statement, if you have clinical symptoms, please combine with other tests to specifically analyze or consider whether there are other pathogenic factors infection.
Alveolar lavage fluid is a specimen collected by fiberoptic bronchoscopy after lavage of sub-bronchial lung segments and sub-lung segments, which is subjected to pathogenetic examination to help clinically identify the causative organisms. Alveolar lavage fluid can detect Mycobacterium tuberculosis, fungi, cancer cells, mycoplasma, chlamydia, etc. If no fungi are detected, it suggests that the fungus may not be infected and other possibilities need to be considered.
However, if the alveolar lavage fluid does not detect fungi but there are clinical symptoms, the absence of fungal infection cannot be diagnosed conclusively, and it can be identified by pathologic examination or genomic sequencing, and treated symptomatically after the diagnosis is confirmed.