Other diagnostic tests that may prove useful also include Aspergillus PCR, serum (1→3)-β-d-glucan (BDG), the Aspergillus galactomannan lateral flow assay (LFA) (IMMY, Norman, Oklahoma, USA), and the Aspergillus-specific lateral-flow device (LFD) test (OLM Diagnostics, Newcastle Upon Tyne, UK).