Roscosmos cosmonaut Ivan Wagner demonstrated the process of venous blood sampling on board the ISS as part of the Neuroimmunity experiment.

In the time-lapse video, he and cosmonaut Alexei Ovchinin perform a sequence of operations: blood sampling, centrifugation and freezing in a thermostat until descent, preparation of blood smears, and collection of saliva and hair samples for subsequent analysis.

Daily electrocardiograms, pulse oximetry, and activity are recorded in parallel using an accelerometer, which ensures the collection of comprehensive data on the physiological state.

The Neuroimmunity experiment uses modern instruments and technologies to monitor the condition of cosmonauts under prolonged exposure to weightlessness and other stressful factors, such as launch, landing, and adaptation of the body to the space environment. The examination procedure is carried out at different stages: before the flight (90 and 45 days in advance), during the flight (sessions after 2 and 4 months, and for long-term missions - every 2 months, plus before descent) and after returning to Earth (on days 1, 7, 21/28 and 120/200).

The collected biological material is stored on board the ISS until the cosmonauts return and will be analyzed using modern laboratory methods to assess the immune, endocannabinoid and purinergic systems, as well as to identify changes in electrophysiological parameters. The use of the "Cosmocards" device for ECG recording and new non-invasive pulse oximetry methods allows us to obtain a detailed picture of the body's adaptive rearrangements, which is crucial for ensuring the safety and effectiveness of long-duration space flights.

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