VO2 Max Testing & Blood Diagnostics Clinics in Germany | YEARS
You might have a solid VO₂ max score—perhaps estimated by your smartwatch—but your performance has plateaued. Or maybe you don't feel as fit as you should, despite regular training. The root cause…
VO₂max and Blood Diagnostics: Which Clinics Combine Both?
You have a solid VO₂max value, perhaps even estimated by your watch, but your performance has plateaued. Or you do not feel as fit as you think you should despite regular training. One reason may lie in factors that can be detected in your blood.
A VO₂max test shows how well your cardiorespiratory system performs under exercise. Comprehensive blood diagnostics can reveal additional factors that influence this performance, such as anemia, iron deficiency, metabolic disorders, or thyroid disease.
That is exactly why finding a VO₂max and blood diagnostics clinic in Germany that intelligently combines both can make sense for health-conscious people.
This article explains why this combination can be informative, which providers exist, and what to look for when choosing one.
Why Combining a VO₂max Test With Blood Diagnostics Can Be So Informative
Maximum oxygen uptake and cardiorespiratory fitness are far more than metrics for competitive athletes.
A scientific statement from the American Heart Association describes cardiorespiratory fitness as one of the strongest prognostic health markers. Low fitness levels are consistently associated with a higher risk of cardiovascular disease and all-cause mortality. The AHA therefore argued as early as 2016 that cardiorespiratory fitness should be treated similarly to a clinical vital sign. (ahajournals.org)
The limitation of isolated testing is this: cardiopulmonary exercise testing measures very precisely how the heart, circulation, respiratory system, and muscles work together under exercise. It can already provide clues as to where a performance limitation may be occurring. Still, it does not answer every possible cause.
This is where additional blood diagnostics can provide further information.
Iron Deficiency
Iron is relevant for hemoglobin production and numerous enzymatic processes, among other functions. The oxygen-carrying capacity of blood depends substantially on hemoglobin concentration.
Ferritin, by contrast, primarily serves as a marker of iron stores. Iron deficiency can already exist despite normal hemoglobin levels and may be associated with fatigue or reduced performance, particularly in endurance athletes.
In athletes, ferritin levels between roughly 15 and 30 µg/L are often interpreted as indicating low iron stores. However, ferritin should be assessed together with hemoglobin, transferrin saturation, and inflammatory status. (pmc.ncbi.nlm.nih.gov)
Inflammation
High-sensitivity C-reactive protein (hs-CRP) is a marker of low-grade systemic inflammatory activity.
An elevated value is nonspecific and can have many causes. It does not automatically explain why VO₂max is low. In combination with other findings, however, hs-CRP can help identify inflammatory processes or increased cardiovascular risk.
Glucose Metabolism
Fasting glucose and HbA1c provide important information about glucose metabolism, but they do not detect every early abnormality.
An oral glucose tolerance test shows how the body responds to a defined glucose load. Current ADA criteria use fasting glucose, HbA1c, and the 2-hour OGTT value for diagnosing prediabetes and diabetes. (diabetesjournals.org)
Insulin measurements and derived values such as HOMA-IR can provide additional information about insulin sensitivity. However, HOMA-IR is not a universally standardized diagnostic threshold test for insulin resistance in the general population.
Thyroid Function
Overt hypothyroidism can cause fatigue, reduced exercise tolerance, and metabolic changes, among other symptoms.
TSH and free T4 are particularly important for basic assessment. Free T3 can be measured as an additional parameter in certain situations but is usually less important for the typical diagnosis of hypothyroidism. Subclinical hypothyroidism is classically characterized by elevated TSH with still-normal free T4. (thyroid.org)
An isolated VO₂max value therefore does not answer every health-related question. Combining it with appropriate laboratory values can help assess possible factors influencing physical performance.
What Exactly Does a VO₂max Test Measure? Cardiopulmonary Exercise Testing Explained Simply
The term “VO₂max test” is often used imprecisely. In a medical setting, it usually refers to cardiopulmonary exercise testing, also known as CPET or spiroergometry.
It is considered the reference method for directly measuring cardiorespiratory fitness.
Definition of VO₂max
The value describes the maximum amount of oxygen your body can take up and use during very intense exercise.
Relative values are usually expressed as milliliters of oxygen per kilogram of body weight per minute: ml/kg/min.
When true maximal exertion is reached, the term VO₂max is often used. If no clear plateau in oxygen uptake is reached, VO₂peak is scientifically more precise.
How Cardiopulmonary Exercise Testing Works
The examination is performed, for example, on a bicycle ergometer or treadmill.
You wear a breathing mask that continuously measures oxygen uptake and carbon dioxide output. The workload is increased gradually or continuously until a high or maximal individual level of exertion is reached.
Depending on the setting and medical question, medical CPET may additionally monitor ECG, heart rate, and blood pressure.
The actual exercise phase often lasts around 10 to 15 minutes; preparation, resting measurements, and analysis take additional time.
More Than Just One Number
Professional cardiopulmonary exercise testing provides considerably more than maximum oxygen uptake.
Ventilatory thresholds: These help identify different exercise zones and metabolic transitions as intensity increases. For training prescription, they are often more useful than a generic percentage of maximum heart rate.
VE/VCO₂ slope: This parameter describes the relationship between ventilation and carbon dioxide output and provides information about ventilatory efficiency. In clinical cardiology and pulmonology, it can provide important diagnostic and prognostic information.
Heart-rate response and recovery: The heart-rate pattern during and after exercise provides additional information about fitness and autonomic regulation.
Professional CPET systems also allow a considerably more differentiated assessment of possible cardiac, pulmonary, or peripheral performance limitations. (ahajournals.org)
How It Differs From Other Methods
Exercise ECG
A conventional exercise ECG assesses heart rate, rhythm, blood-pressure response, and ECG changes during physical exertion, among other parameters. Without respiratory gas analysis, oxygen uptake is not measured directly.
Field Tests
Tests such as the Cooper test can estimate aerobic performance based on the distance covered. They depend more heavily on motivation, running economy, test conditions, and day-to-day form.
Wearables
Garmin, Apple Watch, WHOOP, and other wearables estimate VO₂max or cardiorespiratory fitness using heart rate, speed, power output, and additional sensor data.
These estimates can be useful for tracking trends. However, individual values may differ meaningfully from a direct respiratory gas measurement.
For medical assessment or precise performance diagnostics, direct cardiopulmonary exercise testing therefore remains the better method.
A good VO₂max value depends strongly on age, sex, body composition, training status, and the testing method used. A single universal threshold for “good” or “bad” is therefore of limited value. Reference values should be interpreted according to age and sex.
Which Blood Tests Usefully Complement a VO₂max Test?
A comprehensive blood panel can put the CPET results into context. The goal is less about measuring as many values as possible and more about identifying relevant potential influencing factors.
Iron Status: Oxygen Transport and Energy Metabolism
A complete blood count including hemoglobin is central.
Ferritin provides additional information about iron stores. Iron deficiency can occur before overt anemia. Especially in endurance athletes, it can therefore be useful to assess ferritin together with hemoglobin, transferrin saturation, and potentially inflammatory markers. (pmc.ncbi.nlm.nih.gov)
Inflammatory Markers
hs-CRP can indicate low-grade systemic inflammatory activity.
The marker is nonspecific and should not be overinterpreted in isolation or immediately after very intense physical exercise.
Metabolism
Fasting glucose, HbA1c, and, depending on the question, an OGTT provide information about glucose regulation.
Additional insulin measurements and HOMA-IR can help characterize metabolic status in more detail but should be interpreted within the clinical context.
Thyroid
TSH and free T4 are the central parameters when hypothyroidism is suspected. Free T3 may be useful as an additional test for certain clinical questions. (thyroid.org)
Cardiovascular Markers
ApoB reflects the number of atherogenic lipoprotein particles in the blood and can provide additional information about cardiovascular risk, particularly when there is discordance with LDL cholesterol.
Lp(a) is largely genetically determined and represents an independent cardiovascular risk factor. Because Lp(a) remains relatively stable over a lifetime, at least one measurement in adulthood is often recommended.
These markers do not directly explain a VO₂max value. They complement performance diagnostics with information about long-term cardiovascular health.
Vitamins and Micronutrients
Micronutrient testing can be useful particularly when there is clinical suspicion, nutritional risk, or corresponding symptoms.
Vitamin D should not be interpreted according to a universal “optimal threshold.” Its interpretation depends on the measured value, clinical context, and the guideline being used.
These biomarkers are included in the YEARS Core® program together with a comprehensive laboratory panel. For a broader hormonal context, YEARS Evolve® includes additional markers and further diagnostics.
Providers in Germany: Who Combines VO₂max and Blood Diagnostics?
The market for preventive and sports medicine diagnostics in Germany is fragmented. Different providers have different priorities.
Sports Medicine Institutes
Institutions such as Charité Sports Medicine and other university or private sports medicine centers provide professional cardiopulmonary exercise testing. Charité explicitly describes respiratory gas measurement under exercise as a method for determining individual thresholds, training status, and diagnosing various medical conditions. (sportmedizin.charite.de)
Which blood tests are offered in addition depends on the center and the clinical question.
Traditional Premium Check-Up Centers
Providers such as Preventicum offer comprehensive internal medicine and imaging-based check-ups. Preventicum operates a location in Essen as well as other sites and services. (preventicum.com)
Performance diagnostics and blood testing may be included depending on the program; the exact scope should be checked before booking.
Longevity Clinics
A newer category combines performance diagnostics, comprehensive biomarker analysis, and additional testing such as imaging, biological age markers, or multi-cancer tests.
Here, VO₂max is viewed less as a pure sports metric and more as part of a broader assessment of cardiometabolic and functional health.
Residential Health Resorts
Providers such as Lanserhof combine medical diagnostics with multi-day stays and additional medical and recovery-related services. Lanserhof, for example, offers multi-day health check programs. (lanserhof.com)
For people looking for a compact outpatient solution, specialized outpatient clinics may be a more time-efficient alternative.
YEARS Berlin: VO₂max as Part of a Comprehensive Longevity Diagnostic Day
YEARS has built a physician-led preventive clinic in Berlin that brings together performance diagnostics, laboratory testing, and additional examinations in a structured diagnostic day.
Performance diagnostics form a central component of the YEARS Core® program.
Cardiopulmonary Exercise Testing
Oxygen uptake is measured directly through respiratory gases during exercise. In addition to VO₂peak or VO₂max, individual exercise zones and ventilatory thresholds can be evaluated.
HRV Test
Heart-rate variability provides information about regulation by the autonomic nervous system.
Muscle Strength and Balance Assessments
Standardized functional testing provides additional data on strength and neuromuscular performance.
Additional examinations are performed on the same day.
87+ Biomarkers
The laboratory panel includes ferritin, hs-CRP, glucose metabolism parameters, thyroid values, ApoB, Lp(a), Omega-3 Index, and vitamin D, among others. The current Core page describes more than 87 biomarkers and more than 25 examinations in total. (years.co)
Body Plethysmography
Body plethysmography complements spirometry and makes it possible to determine static lung volumes and airway resistance, among other parameters.
It can therefore provide additional information compared with simple spirometry alone, particularly for certain pulmonary questions.
Cardiovascular Diagnostics
The diagnostic day includes resting ECG, cardiovascular functional testing, and ultrasound examinations, among other assessments.
Imaging and Body Analysis
Ultrasound examinations assess the heart, abdominal organs, and thyroid, among other structures. A 3D body scan provides standardized body measurements and model-based information about body shape and body composition.
Around two weeks after the roughly six-hour diagnostic day, the findings are combined in the personal YEARS Health Report. During the subsequent physician strategy consultation, results, risk factors, and potential next steps are prioritized.
YEARS Evolve®
Those seeking additional diagnostics can choose the YEARS Evolve® program.
It includes a whole-body MRI, an expanded biomarker panel, a liquid biopsy for multi-cancer detection, biological age analyses, and storage of biological samples, among other services.
Current publicly listed prices are €1,900 for Core®, €7,600 for Evolve®, and €16,900 for Ultimate®. (years.co)
Medical services are billed according to the German GOÄ fee schedule. Privately insured patients can submit the relevant invoices to their insurer. Whether and how much is reimbursed depends on the individual policy, medical necessity, and the specific services provided.
What to Look for When Choosing a Clinic
Is It a Real Cardiopulmonary Exercise Test?
Ask specifically whether respiratory gases are directly measured during physical exercise or whether VO₂max is simply estimated.
How Comprehensive Is the Blood Panel?
Ask for a specific list of the biomarkers being measured.
For a comprehensive cardiometabolic assessment, ferritin, complete blood count, ApoB, Lp(a), hs-CRP, glucose values, and, depending on the clinical question, insulin parameters may be relevant.
Simply stating “more than 100 markers” says little without a specific list.
Is There a Physician Review?
Do you receive only individual laboratory and performance values, or an integrated medical report that interprets the findings together?
Are the Findings Interpreted Together?
Iron deficiency, anemia, or thyroid disease may be clinically relevant in someone with reduced performance.
A good evaluation considers these connections without prematurely assuming causality from a simple association.
Is the Program Outpatient or Residential?
Does the program fit into your daily life? Some providers perform the diagnostics within a few hours, while others combine them with a multi-day stay.
How Transparent Are Costs and Billing?
Are program prices clearly stated? Which services are included? Are medical services billed according to GOÄ?
What Qualifications Do the Physicians Have?
Depending on the goal, experience in internal medicine, cardiology, pulmonology, sports medicine, or preventive medicine may be relevant.
What Perspective Is Taken?
Is the focus primarily on athletic performance, or is performance also assessed in relation to long-term cardiovascular and metabolic health?
Costs and Process: What Can You Expect From a Combined Check-Up?
Costs vary considerably by provider and scope.
As a rough guide, current self-pay offers in Germany show that an isolated cardiopulmonary exercise test often costs around €150 to €400. Current examples range from about €159 to roughly €380 depending on whether physician examination, ECG, lung-function testing, or additional assessments are included. (synergy-protraining.de)
Comprehensive laboratory testing varies much more because cost depends directly on the number and type of biomarkers.
Combined premium check-ups with extensive laboratory testing, functional diagnostics, and potentially imaging typically fall into the four-figure range.
At YEARS, cardiopulmonary exercise testing is not a separate add-on but part of the overall program.
YEARS Core® – €1,900
The program includes the roughly six-hour diagnostic day with 87+ biomarkers, cardiopulmonary exercise testing, ultrasound, body plethysmography, and additional functional examinations, as well as the Health Report and physician strategy consultation. (years.co)
YEARS Evolve® – €7,600
Evolve® expands Core® with whole-body MRI, liquid biopsy, biological age analyses, an expanded biomarker panel, and biobanking, among other services. (years.co)
For privately insured patients: medical services billed according to GOÄ can be submitted to the private insurer. This does not automatically mean that reimbursement will be provided. Asking the insurer in advance is sensible for larger diagnostic programs.
The process is designed for efficiency. You come to the clinic according to the preparation instructions and move through the different stations in a fixed sequence.
You do not need to be a competitive athlete to undergo cardiopulmonary exercise testing. For a maximal test, however, you should be willing and medically suitable to exercise up to your individual limit.
Conclusion: Combining VO₂max and Blood Diagnostics
Your cardiorespiratory fitness is one of the most informative measurable health parameters. A VO₂max or VO₂peak value should, however, not be viewed in isolation.
Professional cardiopulmonary exercise testing already provides extensive information about the interaction between the heart, lungs, and circulation. Additional laboratory values can identify further factors that influence performance and long-term health.
When choosing a clinic, the number of tests matters less than the quality of the individual procedures and the medical interpretation of the results.
An outpatient diagnostic day like the one offered by YEARS in Berlin combines these different data sources within a structured program.
Learn more about the YEARS Core® program or schedule a non-binding consultation.
Frequently Asked Questions (FAQ)
Can I Have My VO₂max Measured Without Being a Competitive Athlete?
Yes. Cardiorespiratory fitness is a relevant health marker outside competitive sports as well.
A maximal exercise test should be performed according to your health status and, when medical risks are present, under medical supervision.
Which Blood Tests Are Most Important for Interpreting My VO₂max?
That depends on your individual situation.
A complete blood count and iron status, inflammatory markers, glucose metabolism, and thyroid parameters may be particularly relevant.
ApoB and Lp(a) do not directly explain the measured VO₂max but provide important additional information about long-term cardiovascular risk.
How Long Does a Combined VO₂max and Blood Diagnostics Check-Up Take?
The YEARS Core® program takes approximately six hours. During this time, blood collection and cardiopulmonary exercise testing are performed alongside additional medical and functional examinations.
Does Private Health Insurance Cover Cardiopulmonary Exercise Testing and Blood Diagnostics?
That depends on the individual private insurance policy, the medical indication, and the services billed.
An invoice compliant with GOÄ can be submitted to private health insurance, but this does not guarantee full or partial reimbursement. Clarification with the insurer in advance is recommended.
This article is intended for general information and does not replace individual medical advice. In people with existing heart disease, relevant symptoms, or other medical conditions, a maximal exercise test should only be performed after appropriate medical assessment.
Sources
- Ross R, Blair SN, Arena R et al. Importance of Assessing Cardiorespiratory Fitness in Clinical Practice: A Case for Fitness as a Clinical Vital Sign. Circulation. 2016;134:e653–e699. (ahajournals.org)
- American Heart Association / European Association for Cardiovascular Prevention and Rehabilitation. Clinical Recommendations for Cardiopulmonary Exercise Testing Data Assessment. Circulation. 2016. (ahajournals.org)
- Shvartz E, Reibold RC. Aerobic fitness norms for males and females aged 6 to 75 years: a review. Aviation, Space, and Environmental Medicine. 1990;61(1):3–11. (pubmed.ncbi.nlm.nih.gov)
- Clénin GE et al. Iron deficiency in sports – definition, influence on performance and therapy. Swiss Medical Weekly. 2015. (smw.ch)
- American Diabetes Association Professional Practice Committee. Diagnosis and Classification of Diabetes: Standards of Care in Diabetes—2026. Diabetes Care. 2026. (diabetesjournals.org)
- American Thyroid Association. Thyroid Function Tests / Hypothyroidism. (thyroid.org)
