The invention relates to a method for the diagnosis and/or risk stratification of invasive fungal infections (IFI)/invasive fungal diseases (IFD) and in particular associated with sepsis or septic shock, wherein a determination of the marker proadrenomedullin (proADM) or a partial peptide or fragment thereof, in particular midregional proadrenomedullin (MR-proADM), or contained in a marker combination (panel, cluster), is carried out from a patient to be examined. Furthermore, the invention relates to a diagnostic assay and a kit for carrying out the method.