# Immunoglobulin G, Subclasses (1-4)

> This test measures the levels of four specific types of Immunoglobulin G (IgG), which are antibodies your immune system uses to fight infections. It helps show if your body is making enough of each specific antibody type to protect you against bacteria and viruses, which is often checked when a person has frequent infections.

- Labcorp code: 209601
- Category: [Immune Regulation](https://picardo.health/labs/tests/immune-regulation.md)
- Sample: blood
- Labcorp turnaround: 3–5 days
- Collection: free at a Labcorp location, or $75.00 at home.
- Without a doctor: yes. People order it themselves, with no doctor's visit or referral.
- Price: shown on the review page its order link opens. Opening it orders nothing.
- Order link: https://app.picardo.health/labs/order?tests=209601&ref=assistant

## Results reported (5)

- Immunoglobulin G, Qn, Serum
- IgG, Subclass 1
- IgG, Subclass 2
- IgG, Subclass 3
- IgG, Subclass 4

## About ordering

People order for themselves, with no doctor's visit or referral, and results arrive in their Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.