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Glutamic Acid Decarboxylase Antibody

Glutamic Acid Decarboxylase Antibody

Alternate Test Name

Glutamic Acid Decarboxylase (GAD65) Antibody Assay, Serum

Epic Mnemonic
Sunquest Mnemonic

LAB650
GADAB

Category

Sendouts

Methodology

Immunoprecipitation Assay (IPA)

Test Performance Schedule

Monday through Thursday, Sunday

Result Availability

2 – 5 days

Specimen Required

Container

Gold top (SST) or Red top (serum) tube

Volume

Pref. Vol.: 1.5 mL serum
Min. Vol.: 1.0 mL serum

Collection Instructions

Routine venipuncture
• Immediately after collection, gently invert tube 5-10 times
• Clot 30 minutes
• Promptly centrifuge 15 minutes
• Immediately transfer red top serum to separate plastic tube
• Refrigerate

Transportation Instructions

Refrigerated

Stability

After separation from cells:
Room temperature: 72 hours
Refrigerated (preferred): 28 days
Frozen: 28 days

Causes for Rejection

Severely hemolysis, gross lipemia, gross icterus

CPT Codes

86341

Effective/Revised

8/26/2019

 

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