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GAD Ab LIS Code: GAD Ab

Detect GAD antibodies linked to type 1 diabetes. Reliable private testing with fast results.

£136 Blood sample Results in 15 days

Before your test

Any time of dayBook whichever slot suits you
Usually no fastingAny preparation this test needs is listed in your booking email
About 5 minutesA quick sample taken from your arm
Results onlineIn your secure online account, with the lab's reference ranges
Where you can test: SloughVictoriaNeasdenHome visit
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£136
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⏱ Results in 15 days · LIS: GAD Ab
ℹ️ TAT begins when your sample is received at our lab.
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Phlebotomy Fee: £25
A one-off £25 phlebotomy fee applies per visit — this covers your blood draw regardless of how many tests you book in the same appointment.

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About this test

What is GAD Ab (Glutamic Acid Decarboxylase Antibody)

GAD Ab refers to antibodies directed against glutamic acid decarboxylase (GAD), an enzyme involved in the production of gamma-aminobutyric acid (GABA), a key neurotransmitter that regulates neuronal excitability in the central nervous system.

Function of GAD

GAD plays a critical role in synthesizing GABA, which helps maintain balance in nerve signaling and prevents overstimulation of the nervous system.

Role of GAD Antibodies

GAD antibodies are autoantibodies produced by the immune system that mistakenly target the GAD enzyme.

Clinical Significance of Elevated GAD Ab Levels

High levels of GAD antibodies are commonly associated with autoimmune conditions such as:

Type 1 diabetes

Stiff person syndrome

Certain types of epilepsy

Our Professional Services Our diagnostic testing is carried out by Medical Diagnosis, a UKAS ISO 15189 accredited laboratory, ensuring all results meet the highest UK standards of quality and accuracy. Clinical consultations and treatments, including Testosterone Replacement Therapy (TRT) and Weight Management programmes, are delivered through Medical Diagnosis Victoria, which is registered with the Care Quality Commission (CQC). All clinical services are provided by GMC-registered doctors with extensive experience, following thorough medical assessment in line with UK regulatory standards.
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