Blood collection at collection point
- After your order you receive instructions by email
- Make an appointment at a collection point near you
- Blood collection at 1,000+ locations across the Netherlands
- Receive your results digitally by email
Endurance Sports
Complete blood count, iron status (ferritin, transferrin), kidney function, liver function, testosterone, and hs-CRP. For athletes and endurance sport participants.
Blood collection at collection point
- After your order you receive instructions by email
- Make an appointment at a collection point near you
- Blood collection at 1,000+ locations across the Netherlands
- Receive your results digitally by email
What is Endurance Sports Blood Test?
The Endurance Sports Blood Test is specifically designed for athletes and endurance athletes who train intensively in sports such as running, cycling, triathlons, swimming, or football. This comprehensive test measures crucial biomarkers that directly influence sports performance, recovery, and overall health. It provides insight into anemia, iron status, kidney function, liver load, hormonal balance, and inflammatory processes that can occur during intensive training.
What is tested?
- Complete Blood Count – Red blood cells, white blood cells, and platelets
- Hemoglobin – Oxygen-transporting protein in red blood cells
- Hematocrit – Percentage of red blood cells in blood
- Iron (serum iron) – Available iron for oxygen transport
- Transferrin – Protein that transports iron throughout the body
- Iron Saturation – Percentage of transferrin loaded with iron
- Ferritin – Iron storage in the body
- Creatinine – Waste product for kidney function assessment
- eGFR – Estimated Glomerular Filtration Rate (kidney function)
- ALT – Liver enzyme (Alanine Aminotransferase)
- AST – Liver enzyme (Aspartate Aminotransferase)
- Testosterone (total) – Male sex hormone for muscle mass and recovery
- Free Testosterone – Biologically active form of testosterone
- SHBG – Sex Hormone Binding Globulin
- hs-CRP – High-sensitivity C-reactive protein (sensitive inflammation marker)
Why should you get an Endurance Sports Blood Test?
Endurance athletes have unique physiological needs and risks. Iron deficiency and anemia are common with intensive training, especially in female athletes. The test checks for sports anemia where the body produces too few red blood cells. Kidney function is crucial because intense exercise stresses the kidneys. Liver enzymes can be elevated due to intensive training or supplement use. Testosterone levels affect muscle recovery, strength, and libido. The hs-CRP marker helps detect overtraining and monitor recovery status. This test is suitable for athletes of all levels, from amateurs to professionals.
What does it indicate?
The results provide a complete picture of your physiological status as an athlete. Low hemoglobin and ferritin indicate anemia or iron deficiency that restrict oxygen transport and reduce performance. Elevated liver enzymes can indicate overtraining or liver strain. Low testosterone levels in men can slow recovery and lead to overtraining syndrome. Elevated hs-CRP indicates inflammation or insufficient recovery between training sessions. These biomarkers help you optimize training, nutrition, and recovery for maximum performance.
What does a high level mean?
Elevated liver enzymes (ALT/AST) can indicate overtraining, supplement use, or dehydration during intensive training. High hs-CRP values indicate systemic inflammation, insufficient recovery, or incipient overtraining. Elevated hematocrit can indicate dehydration or, in extreme cases, unnatural substances. High creatinine values can indicate kidney stress due to intensive training or insufficient hydration. These values require adjustments in training intensity, recovery protocol, or nutrition.
What does a low level mean?
Low hemoglobin and ferritin are very common in endurance athletes and lead to reduced oxygen transport, fatigue, and poorer performance. Iron deficiency should be corrected with supplementation under guidance. Low testosterone levels in male athletes can indicate overtraining syndrome and require training reduction and recovery. Low iron saturation means there is insufficient iron available for red blood cell production. These deficiencies are often easy to correct but have a major impact on performance if ignored.
Frequently asked questions
Answers to what people usually want to know.
How does it work from order to result?
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
How quickly can I get tested?
Usually very quickly. Collection points typically have slots within a few days, sometimes even same-day. It depends on how busy the location is. For a few specialist analyses we first ship collection materials, which takes a bit longer.
Do I need to book an appointment?
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
