InsideTracker Fitness blood test - 7 blood values
A 7-biomarker fitness panel inspired by InsideTracker's Fitness category — total and free testosterone, SHBG, DHEA-S, cortisol, B12 and folate behind your fitness score.
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Included Markers
7 markersTotal Testosterone, Free Testosterone, Vitamin B12, SHBG (Sex Hormone Binding Globulin), Cortisol, Folate (Folic Acid), DHEA-S
The InsideTracker Fitness blood test measures the 7 blood values InsideTracker uses to score fitness: total testosterone, free testosterone, SHBG, DHEA-S, cortisol, vitamin B12 and folate. Here you buy exactly that panel, drawn at a certified Dutch lab.
Progress in the gym is about the balance between building up and breaking down. These values show the hormonal side of that story.
Why this test?
InsideTracker gives members a Fitness score from 0 to 100, calculated from a fixed set of blood values. If you search for InsideTracker in the Netherlands, you usually want those values measured without a membership and without shipping a sample to the United States.
This blood test is that alternative: the same 7 blood values behind the Fitness category, drawn at a certified Dutch lab and returned digitally in your account, with an assessment by a BIG-registered doctor.
Who is this test for?
This panel may suit athletes who want to follow the hormonal side of their training. It can be relevant for:
- Strength athletes who want to know their testosterone and free testosterone
- People with reduced energy or libido who want an objective starting point, alongside their GP's advice
- Athletes who suspect overtraining and want to see their cortisol
- People who want the InsideTracker Fitness category measured in the Netherlands
What is tested?
This panel measures 7 blood values:
- Hormones: Total Testosterone, Free Testosterone (calculated, no extra draw), SHBG and DHEA-S.
- Stress: Cortisol, the counterpart of your anabolic hormones.
- Vitamins: Vitamin B12 and Folate.
What can this test tell you?
The results show how your anabolic hormones and your stress hormone compare to the reference ranges. The combination is informative: a normal total testosterone with a high SHBG can still mean a low free testosterone, and that is the fraction your body can actually use.
If you want the complete hormonal picture including estradiol, progesterone and thyroid, our InsideTracker Hormone Balance blood test measures 12 values. The full InsideTracker blood test measures 36 blood values in one go. Keep in mind that a single value is not a diagnosis.
How is the sample collected?
For this blood test, a staff member draws a small tube of blood at a certified location. You can choose from 650+ collection sites, so there is almost always a location near you.
You show the barcode from your ZorgDomein email and bring a valid ID. Without a BSN there is no barcode: you then print your referral form through the link in the email and bring it to the draw location. The draw usually takes just a few minutes.
When is this test useful?
Some athletes choose to measure these values:
- When they want a baseline before starting a new strength block
- When their progress stalls despite consistent training and nutrition
- When they want to see whether stress shows up in their cortisol
- When they want to repeat their US InsideTracker measurement in the Netherlands
What do the results mean?
What the results mean depends on your personal situation, your age and your sex. Hormone values also fluctuate through the day, so the draw moment matters.
Always discuss any deviating values with your GP, so you know what the results may mean for you personally.
What happens after the results?
You receive your results digitally in your account, usually within a few working days. For each value, you can see whether it falls within the reference range.
Every blood test result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Frequently Asked Questions
No. You receive the measured blood values with reference ranges and an assessment by a BIG-registered doctor. The panel measures the same 7 values InsideTracker bases its Fitness score on.
No. Free testosterone is calculated from your total testosterone and SHBG, without an extra tube. It is the fraction not bound to proteins, which your body can use directly.
Both. All values are measured in men and women; the reference ranges differ by sex and the doctor assesses your results accordingly.
Strict fasting is not required, but plan the draw in the morning between 7 and 10 am: your testosterone and cortisol peak then and reference ranges compare best.
No, you can request this blood test yourself online. You can then discuss your results with your GP.
You usually receive your results within a few working days, digitally in your account.
What We Test
| No. | Biomarker | Unit | Turnaround |
|---|---|---|---|
| 01 | Total Testosterone | nmol/l | 2 days |
| 02 | Free Testosterone | pmol/L | 3 days |
| 03 | Vitamin B12 | pmol/l | 3 days |
| 04 | SHBG (Sex Hormone Binding Globulin) | nmol/l | 5 days |
| 05 | Cortisol | nmol/l | 3 days |
| 06 | Folate (Folic Acid) | nmol/l | 2 days |
| 07 | DHEA-S | umol/l | 5 days |
| Your result arrives once the slowest test is finished: 5 days. This is indicative; turnaround varies per laboratory. | |||
Preparation
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Pause biotin
RequiredDo you take a supplement with biotin (vitamin B8, common in hair, skin and nail supplements)? Stop it 72 hours before the draw. Biotin interferes with the measurement of these values.
-
Have the draw in the morning
RequiredThese values vary over the day and peak in the morning. Have your blood drawn before 10:00, ideally between 07:00 and 09:00.
- Water is always fine. Drink as usual beforehand, it makes the draw easier.
- Take your usual medication, unless your own doctor told you otherwise.
Extend this panel
Same draw, no second appointment.
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