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. 2021 Mar;153(3):311–319. doi: 10.4103/ijmr.IJMR_768_21

Table.

Diagnostics recognized as essential by the World Health Organization, in addition to direct microscopy, histopathology and fungal culture

Test Major usage Recommended turnaround time
Cryptococcal antigen53 HIV/AIDS, transplant recipients 1 day or less
Aspergillus antigen30 Critical care, bronchoscopy, immunocompromised 2 days or less
Histoplasma antigen55 HIV/AIDS, transplant recipients 2 days or less
Pneumocystis PCR73 HIV/AIDS, transplant recipients, immunocompromised 2 days or less
Aspergillus IgG antibody30 Respiratory patients, especially smear or GenXpert negative suspected TB patients 7 days or less