Positive blood 1,3 beta glucan test

What it means

Beta-1,3-glucan is a major constituent of all of the characterized fungal cell walls, making up between 30-80 percent of the mass of the wall. It is a biomarker of fungal infections such as invasive pulmonary aspergillosis.

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category