Value package
Kidney Function
A targeted test that maps your kidney function: creatinine, eGFR, urea, uric acid, sodium and potassium in a single blood draw.
Kidney Function is a blood test measuring 6 biomarkers, reviewed by a doctor. Below you see exactly what is measured and what those results tell you.
Personal assessment by our BIG-registered doctors
Kidney Function
With this test, another €156 and your blood draw fee is waived
Next step: choose your blood draw location
Composition
What exactly is measured
All 6 biomarkers at a glance. The laboratory's reference values always lead.
Kidney Function69,-
- Uric acid
- Creatinine
- eGFR
- Urea
- Sodium
- Potassium
How Bloodworks works
Order online
Choose your package and preferred location
Receive your lab form
Within 24 hours by email, with appointment planner
Schedule your blood draw
Or choose a walk-in location
Blood draw
Takes just a few minutes
Receive your report
Securely, typically within 2 working days from our physicians
Included
Your personal health dashboard
Sample view · fictitious data.
Within range
of the biomarkers within the lab reference
Latest measurement: 1 Jul 2026
Needs attention
Your development
Vitamine D3
- All your results in one secure place
- See your development with every new measurement
- Compare against your own earlier values
Included
Your laboratory report
Every abnormality is given context and advice by a doctor. Reference values always come from the laboratory.
Client
Reference
Collection date
06-05-2025
Report date
08-05-2025
2 abnormalities found
Magnesium & vitamin D too low, see explanation
Vitamins & Minerals
Doctor comment
Your magnesium and vitamin D are markedly reduced. This can contribute to fatigue, muscle cramps and lower immunity. Supplements are generally available over the counter in the Netherlands. At your levels, however, we advise read more ›
Clinical labs
ISO 15189-accredited laboratories
Venepuncture
Full venous draw, as in a hospital
Our own doctors
Every result reviewed and interpreted
Your trend
Every value over time in your dashboard
Experiences
What customers say
Vanuit de sportschool geattendeerd op Bloodworks en heel tevreden. Bloedonderzoek online besteld en kon direct terecht bij een lab in de buurt. Kreeg het labformulier per e-mail en…Ik heb eerder onderzoeken laten uitvoeren door andere organisaties, maar Bloodworks steekt daar met afstand bovenuit. De snelle service, het persoonlijke contact en de…Na geregeld duizelig te voelen ben ik langs geweest bij Bloodworks voor een bloedtest, snelle service en super snel uitslag gekregen! Advies gekregen van de specialisten om een…FAQ
Frequently asked questions
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 typically within 2 working 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?
No, this package has a one-time € 29 blood draw and collection fee. From € 225 in your basket, these costs are automatically waived.
Can I combine this with another package?
Yes, with 2 or more packages you automatically receive a 10% combination discount.
Ready to gain insight?
Kidney Function · 6 biomarkers · results typically within 2 working days