Serum Anti-Candida Immunoglobulin G (IgG) Antibody Test

This test measures the amount of IgG antibodies in your blood. IgG antibodies are proteins made by your immune system to help fight infections, and they can remain in your body for a long time after an infection has passed or after you have received a vaccine.

IgG antibodies are a type of protein your immune system makes to fight infections. If you’ve been exposed to *Candida* (e.g., from a fungal infection or oral supplements), your body may produce these antibodies. This test detects their presence in your blood.

Your doctor may order this test to find out whether you were exposed to a certain infection in the past, to check how well your body responded to a vaccine, or to help investigate symptoms that could be related to a previous or current illness.

Doctors may order this test if you have a history of *Candida* infections, immune conditions (like HIV or autoimmune diseases), or if you’re taking medications that weaken your immune system. It’s sometimes used to monitor long-term exposure rather than active infection.

A sample is collected through a routine blood draw. A healthcare professional will clean the skin on your arm, wrap a band around your upper arm to make the veins easier to see, and use a small needle to collect blood into a tube. The process usually takes only a few minutes.

A small blood sample is drawn from your arm by a healthcare professional. The blood is sent to a lab for testing.

Common results include a positive result, which means IgG antibodies were detected and suggests past exposure to an infection or a response to vaccination, and a negative result, which means no IgG antibodies were found in your sample. Your doctor will explain what your specific result means for you.

Results are qualitative (positive/negative) rather than numeric. A positive result suggests past exposure to *Candida*, but it doesn’t confirm an active infection. A negative result means no detectable IgG antibodies were found.