# Autoantibodies, Glutamic Acid Decarboxylase (Gad)
> **Product code: NWG** · Class II — Moderate Risk (510(k) clearance required) · Immunology · 21 CFR 866.5660
## Classification
- **FDA Product Code:** NWG
- **Device class:** Class II — Moderate Risk (510(k) clearance required)
- **Regulation:** 21 CFR 866.5660
- **Review panel:** IM
- **Medical specialty:** Immunology
- **Submission type:** 1
- **GMP exempt:** N
- **Life sustaining:** N
- **Implant:** N
- **Third-party review:** Y
## Definition

The device is used for the semi-quantitative determination of glutamic acid decarboxylase (GAD) autoantibodies in human serum as an aid in the diagnosis of Type I diabetes mellitus (autoimmune mediated diabetes).

## Market data
- **Cleared 510(k) submissions:** 2
- **Registered establishments:** 2
## Source
- [FDA Device Classification](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?ID=NWG)
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