The evaluation of alcoholic polyneuropathy begins with a medical history and physical examination.

Physical findings in those with alcoholic polyneuropathy may include:

• Decreased tendon reflexes
• Numbness

Testing is usually necessary to confirm the diagnosis of alcoholic polyneuropathy.

Testing for alcoholic polyneuropathy may include:

• Complete blood count
• Liver profile
• Kidney profile
• Electrolyte profile
• Blood testing for thiamin, pyridoxine, pantothenic acid, vitamin B12, and niacin.
• Nerve conduction studies
• EMG
• Upper GI series
• Bladder function tests