Johnson & Johnson has announced a voluntary recall for all its OneTouch VerioIQ blood glucose meters in the U.S. because they do not provide a warning when a diabetic’s blood sugar level is dangerously high. Instead, the meters turn off.

The meters are made by J&J’s LifeScan unit, which will issue a free replacement meter to all patients.

The company says the meters shut down when a patient’s blood sugar hits 1,024 milligrams per deciliter. That’s an extremely high level requiring immediate medical attention.

Johnson & Johnson, based in New Brunswick, N.J., said patients with one of the meters should contact LifeScan’s customer service at 800-717-0276 to arrange for a replacement meter or ask questions.

The recall is J&J’s latest in a string of about three dozen since 2009.