Does blood test treat peripheral neuropathy?

Peripheral neuropathy involves problems in nerves outside the brain and spinal cord. Blood testing may look for conditions or deficiencies that can contribute to tingling, burning pain, numbness or weakness. Treating an identified cause may help prevent further nerve injury, but the test itself has no healing effect on damaged nerves.

Assessment may also include a neurological examination, medication review and checks of strength, sensation, balance and reflexes. The clinician uses the pattern of symptoms and test results together rather than relying on one result alone.

Arrange an appointment if numbness, burning, pins and needles or weakness is persistent or spreading. Bring a list of medicines and supplements, and note when symptoms began, which areas are affected and whether walking or hand use has changed. Do not start high-dose supplements without advice, because some can worsen nerve symptoms. Treatment may focus on the underlying cause, symptom relief, movement safety and preventing injuries to numb skin.

Read more about [Peripheral Neuropathy](/conditions/peripheral-neuropathy/) and [Blood Test](/treatments/diagnostics-and-screening/blood-test/).

Seek urgent care for sudden weakness, new trouble walking, loss of bladder or bowel control, severe dizziness, confusion, or numbness that rapidly affects one side or rises up the body. A foot or hand injury may also need prompt review when reduced sensation makes it difficult to notice burns, cuts or infection.

Ask which causes the blood tests are checking, whether your medicines could contribute, what symptoms can improve after treating a cause, and whether you need nerve testing or specialist assessment. Ask how to protect areas with reduced sensation and what change should trigger an earlier review.