Detalo Performance™ – CO Rebreather

Blood Volume Measurement for Athletes

The Detalo Performance™ is an instrument to help measure blood volume. Blood volume is a critical parameter for athletic performance in disciplines such as cycling, running, and rowing. The device helps coaches and athletes to understand the effects of specific training programs. The precise assessment of blood volume enables coaches to optimize training strategies with the ultimate aim to increase exercise performance.

Key Benefits

The manual procedure of assessing of blood volumes using the CO rebreathing technique has been around for more than 100 years but is prone to human errors.  Detalo devices automizes the application the needed precise dose of carbon monoxide gas and supports the administration of O2 throughout the rebreathing procedure. The devices allow the operator to focus on the investigated subject and is guided by the software to remember the important steps. The software calculates the results and aditionally provides estimated values for comparison purposes.

Used by Top Athletes and Clinical Scientists

Detalo Performance™ is used by leading Olympic organizations as well as renowned clinical top experts trying to understand how a large variety of external factors affect the Blood Volume of humans. References can be obtained on request.

Read the detailed specifications

Detalo Blood Volume Analyzers

The Detalo instruments automatically determine total blood volume, red blood cell volume and plasma volume in humans in a rapid, safe and precise manner.

The Detalo Performance is to be used for athletes and science and is available for purchase today. The Detalo Clinical is currently going through the medical certification procedures and should be available for clinical use in 2022.

Scientist have used the Detalo Performance to show that athletes can improve their blood volume significantly using heat training.

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Intravascular volumes evaluated by Detalo Performance™ in patients undergoing chronic hemodialysis

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We are working to bring the medical version to market during 2022 Europe will follow.

Detalo Clinical™ 


Blood volume measurements based on CO rebreathing is demonstrated to correlate closely to the “gold standard” radioactive labelling techniques for determined blood volumes. The CO method has a the typical measurement error of 1.5–2% as reported by scientific studies. See specifically:

“CORP: The assessment of total  mass by carbon”

Read more about studies on measurement of intravascular volume status

CE Certified as Consumer Electronics

The Detalo Performance have been thoroughly analysed by Tüv Nord in Hamburg, Germany and have passed to following tests:

  • Electromagnetic compatibility: DIN EN 60601-1-2
  • Electrical Safety test: LVD 2014/35/EU

The CE mark signify that products sold in the EEA have been assessed to meet high safety, health, and environmental protection requirements.

Detalo Performance™ is a non-medical device. The device is not intended to be used to diagnose, track or treat illness. Detalo Health is developing a medical device to serve such purposes.

Blood Volumes and Sport Performance

Olympic endurance athletes may display blood volumes that are nearly double that of normal humans (i.e. up to 10 liters as compared to the standard value of 5 liters), and there is no doubt that this is the main attribute to their also high exercise capacities. Exercise training increases blood volume and stands out as the fundamental attribute to any increase in maximal oxygen uptake (VO2max). This is among others demonstrated by the reversal of exercise training induced gains in VO2max when blood volume is returned to pre training levels by means of blood donation. Blood volumes may also be increased with altitude exposure, heat training and other training interventions. The Detalo can be used to track such changes.