Cryptococcus Antigen

Cryptococcus antigen test is performed to check if a person has a fungal infection caused by Cryptococcus neoformans, in their body. It mainly attacks the lungs, brain and the central nervous system. Cryptococcosis is common in immunocompromised patients suffering from HIV/AIDS or who are on immunosuppressant.

The Cryptococcus antigen test helps diagnose the condition before it develops into cryptococcal meningitis, which can be fatal. The antigen test done on blood samples or cerebrospinal fluid can identify Cryptococcus antigen in serum 22 days before meningitis symptoms appear. High antigen titer indicates an active infection. The symptoms of cryptococcosis include unintentional weight loss, pinpoint red spots, swollen glands, unusual sweating, dry cough, fever, confusion, chest pain, blurred vision, nausea, vomiting, headache and fatigue.