This non-invasive test uses a small wearable sensor to track your blood oxygen levels continuously over 24 hours. It provides key data on how your body responds during sleep, daily activities, and moments when symptoms aren’t always felt. It’s an important investigation for identifying oxygen dips during sleep and diagnosing conditions such as sleep apnoea. It is also essential for distinguishing headaches caused by overnight oxygen desaturation from other types of headache, including migraine, cluster headache, tension-type headache, and others.
This service is especially useful in diagnosing subtle respiratory conditions, adjusting treatments, and managing long-term respiratory or cardiac concerns.
It records oxygen levels over a longer period to help understand patterns that may not appear during a short appointment.
It may be useful for patients with breathing symptoms, sleep-related concerns or ongoing respiratory assessment needs.
Results are reviewed after monitoring and discussed with the patient as part of the follow-up plan.
This information is general and does not replace urgent or emergency medical care. For urgent symptoms, use NHS 111/999 or local emergency services.
