Fungus (1-3)-β-D-Glucan Test (G-test / BDG)

The Fungus (1-3)-β-D-Glucan Test, commonly called the G-test or BDG assay, measures (1-3)-β-D-glucan, a cell-wall component present in many clinically important fungi. As a broad-spectrum serum biomarker, it gives laboratories a marker that can support the diagnostic work-up of invasive fungal infection (IFI) as an adjunct to culture and clinical assessment. BDG does not detect all fungal species—notably it is not reliable for Cryptococcus or the Mucorales—so results are interpreted alongside other findings rather than in isolation.

Built on a kinetic turbidimetric method and read on Era Biology's IGL kinetic tube readers, the assay delivers quantitative, reproducible results with a streamlined workflow. Quantitative readouts can be trended over serial samples to help clinicians and microbiologists follow a patient's BDG levels over the course of evaluation and management.

Era Biology brings established domain expertise to this assay, having contributed to the drafting of China's industry standard for the (1-3)-β-D-glucan test in 2017. Distributed in India by Biostate DX, the G-test extends a portfolio of IVD reagents aimed at making infection diagnostics more accessible across the Indian healthcare ecosystem.