Anti-voltage-gated potassium channel antibody positivity

What it means

The presence of autoantibodies (immunoglobulins) in the serum that react against a voltage-gated potassium channel.

Voltage-gated potassium channels represent a family of transmembrane channels responsible for returning the depolarized cell to a resting state after each nerve impulse.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Voltage gated potassium channel antibodies in blood