Markers: Vrije testosteron, Testosteron, SHBG, Kreatinine, eGFR, DHEA-S

What is bodybuilding?

Bodybuilding is a sport in which the aim is to develop and 'build' the body through nutrition and training. Bodybuilding is about muscle growth. Supplements or steroids are often used to stimulate this and to increase performance. However, this also has an effect on other parts of the body, such as the kidneys.

What do we determine during the anemia test?

Testosterone and free testosterone
Testosterone is a sex hormone which occurs in both men and women. However, it is considered a 'male' sex hormone, because it occurs in a larger quantity in men. This hormone is important for men for the development of male sexual characteristics and fertility. In addition, testosterone is an important hormone for the development of muscles and bones, how fat is stored in the body and for the production of red blood cells. It is therefore important that the testosterone values are correct when you are enthusiastic about exercising, because a different value can have an effect on your sports performance and muscle building.

Testosterone is largely bound to 2 proteins: albumin and sex hormone binding globulin (SHBG). The part that is not bound to proteins is called free testosterone. This is used by the body and has an effect on, among other things, strengthening bones and preventing osteoporosis.

As mentioned above, SHBG is a protein that can bind testosterone. SHBG ensures that the hormones are transported through the blood in the body. The amount of SHBG influences the amount of free testosterone in the body.

DHEA-S (Dehydroepiandrosterone sulfate) is produced by the adrenal gland. DHEA-S is a so-called inert hormone and plays a role in the interaction with DHEA. DHEA is a precursor of estrogen and testosterone, among others. These hormones are responsible for sexual characteristics in adulthood, such as the development of pubic hair, body odor and acne. DHEAS is often measured to see if there are problems with the adrenal glands / The adrenal glands also produce a large part of the androgens.

Kidney function: Creatinine & eGFR
Due to the use of supplements and steroids, kidney damage may occur . The amount of creatinine in the blood can show how well your kidneys are working. This is a waste product that is created when creatine is broken down.

eGFR also provides a clear picture of whether the kidneys are functioning properly. This is the estimated glomerular filtration rate. This test estimates the kidney filtration rate based on a calculation. The eGFR estimates how much blood is filtered per minute by the glomeruli in the kidneys. These are small blood filters that remove waste products in the kidneys. If they can filter less, more waste products enter the blood.

It is recommended to do this test before 10:00 am, because that is when the testosterone measurement is most accurate. The DHEAs result takes about a week.

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 choose a bodybuilding blood test?

This blood test has been specially formulated for bodybuilders and is suitable for every bodybuilder.

Why a blood test for bodybuilding?

As a bodybuilder, it is wise to have your health examined regularly. After all, your body is important and the goal is to keep your body in the to get into the best shape. Not only appearance is important, but also your health. It may be that you perform less well because your blood values are out of balance or that you unknowingly suffer kidney damage due to the use of supplements and / or steroids . With this bodybuilding blood test you can have all this tested and aim for the best sports performance.

The accuracy of the test for Bodybuilding 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 Bodybuilding 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 Bodybuilding 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 Bodybuilding can be found on the product page. Depending on your insurance and additional packages, you may be reimbursed for these costs for Bodybuilding. 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 Bodybuilding 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 Bodybuilding 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 Bodybuilding to third parties without permission, not even to your general practitioner without your consent.
The blood test for Bodybuilding 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 Bodybuilding 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 Bodybuilding 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.


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Uitslag binnen: 24 - 120 uur
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