VO2 max test cost in the UK: what you pay for and what you get

What you pay for in a VO2 max test

VO2 max is the most oxygen your body can take in and use during hard exercise. Measuring it properly means analysing the air you breathe out while the effort rises in stages until you reach your limit. The price covers more than the few minutes of hard work at the end.

• Equipment. A gas analyser that measures your breathing and oxygen use, a mask, a heart rate monitor, and a treadmill or bike. Analysers need regular calibration and cost money to buy and maintain.
• Staff time. Someone has to set up the test, choose sensible starting speeds or power, watch you throughout and decide when the test is complete. Including the warm up and cool down, this is a proper appointment, not a quick check.
• Analysis. The raw breath by breath data has to be cleaned and interpreted. This is where your peak value and the points where your breathing changes as effort rises are identified.
• The report. A clear written summary you can actually train from, rather than a single number.

What changes the VO2 max test price

Lab cart or portable analyser

Traditional laboratory systems, often called metabolic carts, are large and expensive, which tends to be reflected in the price. Portable analysers are smaller and cheaper to run. The obvious question is whether they are accurate enough.

The VO2 Master Pro, the type of analyser we use, was compared against a laboratory metabolic cart in a peer-reviewed study. In trained cyclists the average difference in oxygen use was under 9% across the test, and in maximal tests with recreationally active men it was around 12%. Repeat tests on the VO2 Master were a little less consistent than on the lab system, but the authors judged its validity and reliability acceptable at most intensities and suggested it was a practical option outside a traditional lab (Montoye, Vondrasek and Hancock, 2020). That is honest context: a portable analyser is a real measurement of your breathing, not an estimate, but no system is perfect.

Treadmill or bike

The type of exercise matters. In one study of 13 recreationally active adults, average VO2 max on a self-paced bike test was 48.3 ml/kg/min, compared with about 55 to 56 ml/kg/min on the treadmill tests (Hanson et al., 2016).

So the cost is usually the same either way, but the choice still matters. Runners are generally best tested on a treadmill and cyclists on a bike, so the zones you get back match the way you train. It also means a treadmill result and a bike result are not directly comparable.

Added tests

The biggest change to the price comes from adding other measurements. These are the tests we offer and what each one is for.

What your VO2 max report should include

Whoever you test with, the report is what you are really paying for. A useful one should give you:

• Your measured VO2 max, in ml/kg/min, with a note of whether it was done on a treadmill or a bike.
• Training zones based on your own test, expressed as heart rate, and pace or power where relevant, so easy days are genuinely easy and hard days are aimed at the right level.
• A population comparison, showing how your result sits against people of your age and sex.
• Plain language interpretation of what the numbers mean for you and what to work on.
• A baseline for retesting, so you can see whether a block of training has worked, using the same equipment and exercise type.

Our £150 test includes a full written report covering your training zones and population comparison.

Lab vs smartwatch VO2 max: how accurate is your watch?

Many sports watches give you a VO2 max figure, so it is fair to ask why you would pay for a test. The answer is that a watch estimates VO2 max from your heart rate and pace, while a test measures your breathing directly.

A 2022 systematic review and meta-analysis pooled validation studies of consumer wearables. Watches that estimated VO2 max from resting data overestimated it by about 2 ml/kg/min on average, and individual readings could be anywhere from about 13 ml/kg/min too low to 17 ml/kg/min too high. Watches that estimated it from exercise data had almost no average bias, but individual readings could still be up to roughly 10 ml/kg/min out in either direction. The authors concluded that exercise based estimates may be reasonable for groups of people, but the error for an individual is still large (Molina-Garcia et al., 2022). The same review noted that several popular brands had not been scientifically validated at the time.

A 2025 study of 30 adults compared Apple Watch estimates with a measured treadmill test. The watch underestimated VO2 max by about 6 ml/kg/min on average, with an average error of around 13%, and the authors said the estimates needed further refinement before clinical use (Lambe et al., 2025).

For context, an error of 10 ml/kg/min is about a fifth of the bike result in the study above. A watch is useful for spotting trends over time. If you want a number you can set training zones from, or a reliable baseline, a measured test is the better tool.

Is a VO2 max test worth it?

It depends on what you will do with the result. A large meta-analysis of 33 studies found that each one step increase in fitness, measured as one MET, was linked with about 13% lower risk of death from any cause and 15% lower risk of heart disease and cardiovascular events (Kodama et al., 2009). That is a link seen across populations, not a prediction for one person, but it is a good reason to know where you stand.

The people who tend to get the most from a test are:

• Runners training for a race, especially a half or full marathon, who want zones based on their own physiology. Our marathon preparation package is built around this.
• Cyclists and triathletes who want to train by heart rate or power with confidence.
• People starting structured training who want a clear baseline and to see whether their effort is paying off when they retest.

It is probably less worthwhile if you only want a one off number for curiosity and have no plan to change how you train. If you are unsure, our wider athlete testing page explains how the different tests fit together.

Frequently asked questions

How much is a VO2 max test in the UK?

Prices vary with the equipment used, the staff time involved and how much analysis and reporting you get back. At The Treatment Table in Liverpool a VO2 max test costs £150. That includes a graded test on a treadmill or bike using a VO2 Master portable analyser and a full written report with your training zones and a comparison with people of your age and sex.

Is a smartwatch VO2 max as accurate as a lab test?

Not for an individual. A 2022 meta-analysis found watches using exercise data had little average bias, but single readings could still be around 10 ml/kg/min out either way, and resting based estimates were less accurate. A 2025 study found the Apple Watch underestimated VO2 max by about 6 ml/kg/min on average. Watches are useful for trends, while a measured test gives a reliable baseline.

Is a VO2 max test worth it?

It is most worthwhile if you will use the result, for example to set training zones for a marathon, train by heart rate or power on the bike, or get a baseline before starting structured training and retest later. Higher fitness is linked with lower risk of death and heart disease across large populations. If you only want a one off number out of curiosity, a test may be less useful.

Should I do my VO2 max test on a treadmill or a bike?

Choose the one that matches how you train. Runners are usually best tested on a treadmill and cyclists on a bike, so the training zones fit your sport. Results on a bike are often lower than on a treadmill, so treadmill and bike results should not be compared directly. Retest on the same equipment to track progress.

Is a portable VO2 analyser accurate?

A peer-reviewed study compared the VO2 Master Pro with a laboratory metabolic cart. Average differences in oxygen use were under 9% in trained cyclists and around 12% in maximal tests with recreationally active men. Repeat tests were slightly less consistent than on the lab system, but the authors judged it acceptable at most intensities and a practical option outside a traditional laboratory.