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Sural nerve fibre pathology in diabetic patients with mild neuropathy: relationship to pain, quantitative sensory testing and peripheral nerve electrophysiology

Please note that the other tests mentioned do not directly measure vitamin B12 levels but instead help assess factors related to B12 deficiency or excess

While many patients feel better with B12, its not required for everyone

Both cover lumbar or sacral anatomy with imaging guidance, but they are not interchangeable and must reflect the actual technique documented in the operative note