Bloodworks
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About this test

What this test covers

A targeted test that maps your kidney function, haemoglobin, creatinine, eGFR, and urea in a single blood draw.

See the biomarkers in this test below

Kidney

Kidney Function

69,-

All-in · blood draw costs included

What's measured

Haemoglobin

Creatinine

eGFR

Urea

Interpreted by BIG-registered doctors

Secure payment · 800+ collection points · Results by email

Biomarkers in this test

4biomarkers gemeten
Haemoglobin

Oxygen-carrying protein in the blood; chronic kidney failure can cause anaemia.

Creatinine

Breakdown product of muscle tissue filtered by the kidneys; elevated with reduced kidney function.

eGFR

Calculated glomerular filtration rate, a direct measure of the filtering capacity of the kidneys.

Urea

Nitrogen-containing waste product from protein breakdown; accumulates with poor kidney function.

How it works

From order to a clear report

1

Step 1 of 4

Order the blood test of your choice

Choose a complete package, a focused theme, or build your own test.

Packages, themes or build your own
2

Step 2 of 4

Select your location and pay

Choose a collection point near you and pay securely.

800+ collection points · iDEAL, Klarna, card
3

Step 3 of 4

Lab form by email and blood draw

Right after payment you receive your lab form by secure email. Take it to your collection point.

Secure email · walk-ins welcome
4

Step 4 of 4

A clear report you understand

You receive your results by secure email: clear, abnormalities flagged and interpreted by a doctor.

  • All values clearly presented. Each measurement next to the reference range from your laboratory.
  • Abnormalities clearly flagged. Elevated or reduced values immediately visible with colour coding.
  • Doctor interpretation. Every abnormality given context and advice by a doctor.
Bloodworks

Uw gezondheid, inzichtelijk

Laboratoriumrapport

Cliënt

Referentie

Afnamedatum

06-05-2025

Rapportdatum

08-05-2025

2 afwijkingen gevonden

Magnesium & Vitamine D te laag, zie toelichting

Vitamines & Mineralen

Totaal cholesterol4.8<5.0OK
HDL-cholesterol1.4>1.2OK
LDL-cholesterol2.9<3.0OK
Magnesium0.52>0.7LAAG
Vitamine D18>50LAAG

Arts-commentaar

Uw Magnesium en Vitamine D zijn flink verlaagd. Dit kan bijdragen aan vermoeidheid, spierkrampen en verminderde weerstand. Supplementen zijn doorgaans vrij verkrijgbaar in Nederland. Bij uw waarden adviseren wij echter lees meer ›

Geautoriseerd door arts · BIG-geregistreerdDr. [naam vertrouwelijk]

Good to know

Benefits and limitations of blood testing

A blood test offers valuable insight into your health, but it also has limitations. We set out both honestly, so you can make a well-considered choice.

Benefits

  • Early signals: deviations can become visible before you notice symptoms.
  • A complete picture in one draw: key values clearly together.
  • Interpreted by a doctor: you get context with your results, not just numbers.
  • Track your health over time: repeat easily and see changes.
  • Accessible: no referral needed, a draw at 800+ locations.

Points to consider

  • An abnormal value does not always mean something is wrong; sometimes it is normal for you or a recheck is needed.
  • A normal result does not rule out every condition.
  • Some findings may lead to unnecessary worry or follow-up testing.
  • A blood test is a snapshot in time and does not replace a medical diagnosis.
  • Do you have symptoms or doubts? Always discuss these with a doctor.

We value honest information. For independent information on the benefits and limitations of health tests, we are glad to refer you to the Dutch RIVM, pros and cons of health tests.

Veelgestelde vragen

Alles wat u wilt weten

Do I need to fast?

For urea and creatinine, fasting is recommended for the most reliable values. We advise at least 8 hours fasting.

What is a normal eGFR?

An eGFR above 60 ml/min/1.73m2 is considered normal. Values between 30-60 indicate mild to moderate kidney damage; below 15 indicates severe kidney damage.

Can the doctor explain my results?

Yes, every abnormal value is accompanied by a personal doctor interpretation in your report.

How quickly do I receive my results?

Typically within 2 business days of blood draw.

Are more kidney function markers available?

Yes, through Bloodworks Select you can add additional markers such as cystatin C, phosphate, or potassium.

Do I need a referral?

No, you order directly without a referral from your GP.

Are blood draw costs included?

Yes, the price is all-inclusive including blood draw costs.

Can I combine this with another package?

Yes, with 2 or more packages you automatically receive a 10% combination discount.

Still have questions?WhatsAppsupport@bloodworks.nl

69,-

All-in, blood draw included

Customer service

Questions? We are happy to help!

Available on weekdays from 9:00 – 17:00