This private blood test measures GAD65 antibodies, used to help distinguish type 1 from type 2 diabetes and to investigate certain neurological conditions. The test costs £209.38, plus a £50 blood-draw fee, with results usually available in 5 days.
You can walk in or book online at 117a Harley Street, seven days a week.
Written by Mr Stephen Lingam. Reviewed by Dr Scott Pereira (GMC 1524080) on 28/09/2026.
It measures GAD65 antibodies, used to help distinguish type 1 from type 2 diabetes and to investigate certain neurological conditions.
The test costs £209.38. A separate £50 blood-draw fee applies.
Results are usually available in 5 days.
No GP referral is needed. You can walk in or book online.