Galactomannan (Serum/Plasma)

What Is Galactomannan Used For?

Galactomannan testing is most commonly used in patients with suspected fungal infections, especially those who have weakened immune systems or have undergone certain medical procedures that increase their risk of infection. It may also be used in monitoring patients with known fungal infections to track progression or response to treatment.

Who Might Need This Test?

Your healthcare provider may recommend this test if you have symptoms like fever, cough, or breathing difficulties, or if you have risk factors such as recent organ transplants, chemotherapy, or long-term use of corticosteroids. It is also used in certain clinical settings like bone marrow transplants or patients with advanced lung diseases.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The sample is then processed to detect the presence of galactomannan using a sensitive immunoassay method. The test looks for specific markers that indicate fungal infection.

What Are the Results?

Results are qualitative (positive or negative) rather than quantitative. A positive result suggests a high likelihood of fungal infection, while a negative result means no detectable galactomannan was found. Your doctor will interpret the results in the context of your symptoms and medical history.