Markers: CBC, IJzer, Transferrine, Ferritine, Kreatinine, eGFR, ALAT, ASAT, Testosteron, Vrije testosteron, SHBG, CRP

What is endurance sport?

Endurance sport is a sporting activity in which a certain intensity, such as running speed, is maintained for a longer period of time and where it is important to to recover as quickly as possible. Typical endurance sports are running, cycling and cross-country skiing. But team sports such as football can also be seen as a mixed endurance sport, because you also have to maintain a high intensity over a longer period of time.

What do we determine during the anemia test?

General blood values
(Endurance) sports have a great effect on your blood. The fuel that your muscles need is supplied by your blood. The oxygen is also passed on through the blood, in order to convert the fuel into energy. During exercise, your muscles need fuel and oxygen , where your blood circulation is of great importance.

This determination tests different values in the blood and thus provides a clear picture. The following values are examined: leukocytes, erythrocytes, hematocrit, hemoglobin (Hb), MCV, MCH, MCHC, platelets, and leukocyte differentiation.

This determination tests the amount of iron in the blood. Iron is essential for the transport of oxygen from the lungs to the rest of the body. We need sufficient oxygen for the functioning of the muscles. Iron is therefore extremely important for (endurance) athletes, because sports place great demands on the body. An iron deficiency can cause anemia and affect sports performance.

Iron is transported through the body thanks to transferrin. This is a protein that iron can bind to. Transferrin is therefore important for the transport of iron in the body.

Iron saturation
Iron saturation is calculated from the determinations of iron and transferrin. Iron occurs in different types in the body, where it can be both bound and unbound. We cannot therefore simply talk about iron in the body. This determination therefore contributes to a clear picture of the iron content in the body.

This determination measures the amount of iron that is stored in your body. Ferritin is a protein that stores iron and releases it when needed. This is important when exercising, because the body needs sufficient iron to transport enough oxygen in the body.

Kidney function: creatinine & eGFR
The use of supplements can affect your kidney function. It can cause kidney damage if not used correctly. The creatine and eGFR measurements provide a clear picture of whether your kidneys are functioning properly.

Liver: ALT, AST
Just like with your kidneys, the use of supplements also has an effect on your liver. ALT and AST can be used to investigate whether there is damage to the liver cells.

Hormones: testosterone, free testosterone, SHBG
Hormones not only ensure the development of male or female sexual characteristics, but they have also has an effect on the development of muscles and bones. In addition, they affect how fat is stored in the body and for the production of red blood cells. Your hormones also play an important role in your sports performance.

Inflammation or infection: hs-CRP
Exercise can cause inflammation due to damage to muscles. That is why the determination of hs-CRP is also examined. In this way, it can be examined whether there is muscle damage.

Results are usually available within 24 hours.

How does it work?

Professional testing

Self-tests do not always provide reliable and consistent results. That's why Labplusarts chooses to have the tests professionally administered at a testing location. We have made this process as simple as possible for you.

  1. 1

    Find the test that suits you

    Information on various health topics and a clear overview of our extensive test offerings. Through the website, you can easily determine which test may be relevant for you. Do you need assistance in making a choice or would you like to customize your own package? Feel free to contact us.

  2. 2

    Choose a testing location

    We conduct tests at 350+ locations across the Netherlands, ensuring there is always a location near you. During the ordering process, you can easily select your preferred testing location, and after payment, you can schedule an appointment. Choose where and when it suits you.

  3. 3

    Get tested

    During your appointment, one of our medical professionals will collect your sample. Subsequently, your sample will be examined in the laboratory.

  4. 4

    Truly reliable results with understandable explanations

    Because your sample is taken professionally, the results are consistent. Your test results are evaluated by one of our own doctors and accompanied by thorough advice. We believe it's important that you understand what the results mean for you. We ensure this by providing explanations about the test and the significance of your values.

There is always a location near you

When to take a blood test for endurance running?

This blood test has been specially formulated for endurance athletes. Typical examples of this are running, skating, cycling, skiing and swimming. But This blood test can also be useful for other sports, such as football.

Why choose an endurance running blood test?

Using this endurance blood test you can test whether your values are in balance. The different values can influence your sports performance. This blood test checks everything extensively.

The accuracy of the test for Duursport is conducted through ISO-certified laboratories. The accuracy of a test method is expressed in terms of specificity and sensitivity. However, the most important aspect is that the results are interpreted and accepted among general practitioners and hospitals. This is the case with our venous samples. Mutual acceptance may not always be present due to potentially reduced reliability with a capillary sample.
Most tests generally take 24-48 hours. Tests that go through an LC-MS method generally take longer, think about an average of 3-7 working days. Additionally, it also depends on the location. Some locations do the analysis themselves and others outsource it to another lab.
Interpreting the results of Duursport is not always easy and should be seen in the broader picture, along with anamnesis and physical examination. In the doctor's advice section, the query in which you can already outline your complaints is taken into account, otherwise, the results are interpreted in conjunction with the other results. If necessary, the doctor can call to ask about physical abnormalities. You don't have to interpret the results yourself because there is always advice and explanation from the doctor.
If the results of the test for Duursport are clinically significantly abnormal, the doctor will contact you by phone. If you are not reachable, you will receive an email. This includes advice and an explanation of the abnormal results and what you can do about them. If you need a prescription or referral, we can help with that.
The costs of Duursport can be found on the product page. Depending on your insurance and additional packages, you may be reimbursed for these costs for Duursport. For example, tests for IVF treatment are often reimbursed. After your order, you will receive an invoice that you can submit to your insurance.
The ordering process is easy. You can add a Duursport test or the tests you want to your shopping cart. In step two, you fill in your details and pay. Then you will receive an email confirmation and you can go to a collection location. After you have been there, you will receive the results of the Duursport test in your Portal.
We are certified-ready according to the NEN 7510 and 7512 standards for secure data transfer in healthcare. The Portal is secured with two-factor authentication. Your data is also encrypted. We do not send the results of Duursport to third parties without permission, not even to your general practitioner without your consent.
The blood test for Duursport must take place at one of the collection locations we provide. At certain locations, it is possible for a phlebotomist to come to you. You can indicate this during checkout. An appointment will then be made as soon as possible to come to your home.
You can easily make an appointment for Duursport blood test after your order in your Portal. You can visit almost daily in all major cities in the Netherlands. In smaller cities, you can visit on certain days. At certain locations, it is also possible to visit on weekends.
An interpretation by a doctor or an explanation is included in the Duursport test. The explanation takes into account the query that you can specify in your Portal after ordering.
For blood tests, we always use venous sampling. This is the gold standard for blood collection. Over-the-counter tests, such as a finger prick test, use the capillary route for blood collection. These do not always give the same results and the accuracy depends on how, where, and with which technique the collection is done. The advantage, of course, is that the test is easier and less painful to take.
You can always pay with iDeal and credit card (VISA, Mastercard, and Amex). This also includes Apple Pay. The phlebotomists at the collection location cannot accept cash payments.
The results of Labplusarts can be shared with your general practitioner at your request. However, you can also easily arrange this yourself by downloading the result in PDF format. Because we use comparable test methods as the general practitioner, the results are interchangeable and comparable so that comparisons can be made well.


Nuchter zijn
Validatie door artsen
Uitslag binnen: 12 - 24 uur
Spoed mogelijk
Need help?

Bel naar 085-0043917 voor advies of chat via Whatsapp

Bloedonderzoek zonder verwijzing
Lab test without a referral at 350+ locations

Eenvoudig bloedprikken waar en wanneer het jou uitkomt.

Choose from over 100 tests, with the option to customize your ideal test.
Validation by a medical team (registered physicians with BIG registration)
Quick and understandable results