– Ambulatory Blood Pressure Monitoring
The gold standard for diagnosing high blood pressure — measuring throughout your real daily life, not just in a clinic.
Monitoring Duration
24 Hours
Fitting
At home (posted to you)
Results
2–3 Days
Price
£169
– What is a 24 Hour BP Monitor?
Ambulatory blood pressure monitoring (ABPM) is the gold-standard method for accurately assessing blood pressure. The monitor is posted to your home, already set up for you, and is simple to fit yourself by following the instructions and short video provided. A cuff sits on your upper arm, connected to a small recorder worn on a strap across your body, discreetly under your clothing. Over the following 24 hours the cuff automatically inflates and records your blood pressure at regular intervals — typically every 20–30 minutes during the day and every hour at night.
This approach is far more informative than a single clinic measurement, because it captures how your blood pressure behaves throughout all your normal activities: work, rest, exercise, sleep and stress. It can identify patterns that a single reading entirely misses.
ABPM is particularly valuable for diagnosing “white coat hypertension” — where blood pressure appears elevated in a clinical setting due to anxiety, but is normal elsewhere — and for detecting “masked hypertension”, where blood pressure is normal in clinic but elevated in daily life.
Tracking your blood pressure readings throughout your normal day and night gives a clearer picture to health professionals
Your Appointment
The night-time interval is set to once per hour to minimise disturbance. Most patients find they adapt quickly and do not find it significantly disruptive. The night-time readings are clinically very important, so the slight disturbance is a necessary trade-off for comprehensive data.
The monitor isn’t waterproof and should be kept dry. If you need to shower, remove the device and cuff beforehand and refit them afterwards, keeping it off for as short a time as possible so you don’t miss readings — the instructions show you how. Avoid baths and swimming while you’re monitoring.
Your report will include your average daytime blood pressure (the key diagnostic figure), average night-time blood pressure, 24-hour overall average, the percentage of readings above normal thresholds, your nocturnal dipping pattern (whether blood pressure drops appropriately during sleep), and a clinical summary with recommendations.
Based on NICE guidelines, the thresholds used are: Stage 1 hypertension — daytime average above 135/85 mmHg; Stage 2 hypertension — daytime average above 150/95 mmHg. These thresholds differ from clinic measurements precisely because ABPM readings more accurately reflect true blood pressure. Your report will clearly contextualise your readings against these values.
This depends on the reason for the test. If you are being assessed for a new diagnosis, you may be asked to withhold medication on the day — your referring clinician will advise. If the test is to monitor the effectiveness of existing medication, you should take your medication as normal. When in doubt, call our team before your appointment and we will confirm the appropriate approach.
Your monitoring is provided in partnership with CardioScan, a CQC-registered specialist cardiac monitoring service. Your device is posted to you, and once returned, your recording is analysed by CardioScan’s cardiac physiologists and reported by our cardiology doctor. You receive a clear written report, and the whole process is overseen by our clinical team at Jenhams.
Yes. Your written report is sent directly to you and many patients also like to talk their results through in person, so we offer a private GP consultation at Jenhams to go over your report, explain what it means for you, and agree any next steps — whether that’s reassurance, starting treatment, or arranging an onward referral. You can book this when you arrange your test, or once your results are ready (from £60).
Of course. If you haven’t been referred for a specific test, the right length of monitoring depends mainly on how often your symptoms occur. If you’re unsure, we’d recommend a short private GP Telephone consultation first: one of our GPs will review your symptoms and history and recommend the most appropriate test, giving you the best chance of a clear answer first time. The consultation fee can be redeemed against the cost of your monitoring (from £20).
45 South Street,
Dorking,
Surrey,
RH4 2JX
