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How it works
Sample blood test result with an explanation per value
Why choose Mijnbloedtest
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Kidney checkup: insight into your kidney values

€69,-

A blood test with 5 kidney values — creatinine, eGFR, uric acid, sodium and potassium — for insight into how your kidneys are functioning.

Certified lab
Private & confidential
Results within a few days

Add to your order

No referral needed

Added to your order

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Included values

4 values

Creatinine, eGFR (Estimated Glomerular Filtration Rate), Sodium, Potassium

Your Health Journey in 4 Simple Steps

From order to insights, we've made health testing as easy as it should be.

Order Your Test

Choose the test that fits your needs, pick a lab location, and order online.

Receive Your Referral

You'll receive an email from ZorgDomein with a barcode within 1 business day. Orders outside business hours are processed from the next business day.

Visit the Lab

Show the barcode on your phone and bring a valid ID. Blood draws take about 15 minutes.

Receive Your Results

Receive your lab results within a few business days, assessed by a BIG-registered doctor. We'll notify you the moment they're ready.

Blood test locations

Always a location near you

With 700+ certified phlebotomy points across the Netherlands.

700+ locations 12 provinces
View all locations

What this checkup measures

This checkup includes 4 values for a clear picture of this system.

Biomarkers in this panel, with unit and turnaround
No. Biomarker Unit Turnaround
01 Creatinine Creatinine is a waste product that is continuously produced in your muscles. The kidneys filter it out of the blood and remove it in urine. The blood creatinine level is therefore a core number for kidney function. In Dutch it is written both as creatinine and as kreatinine. Because production depends on your muscle mass, the same figure reads differently per person. A raised creatinine does not automatically point to a kidney problem. This page explains what high and low values can mean. It also covers the everyday things that shift the result temporarily. umol/l 1 day
02 eGFR (Estimated Glomerular Filtration Rate) eGFR (estimated glomerular filtration rate) is a calculated measure of how effectively your kidneys filter waste from the blood. It is the gold standard for diagnosing and staging chronic kidney disease and is derived from blood creatinine or cystatin C levels along with demographic factors. ml/min/1,73m² 1 day
03 Sodium Sodium is a vital electrolyte that regulates fluid balance, blood pressure, and nerve and muscle function. It is the primary cation in extracellular fluid and is closely regulated by the kidneys. mmol/l 2 days
04 Potassium Potassium is an essential electrolyte and mineral that helps regulate heartbeat, muscle contractions, nerve signals, and fluid balance. It is one of the most important minerals for cardiovascular health. mmol/l 2 days
Your result arrives once the slowest test is finished: 2 days. This is indicative; turnaround varies per laboratory.

Preparation

  1. Better no hard training beforehand

    Recommended

    Hard exercise in the 48 hours before can raise this value temporarily. Plan the draw on a rest day if you can.

  • 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

Tests from the same field, run on the same sample. Same draw, no second appointment.

Ferritin ug/l Ferritin is a protein that stores iron, so your ferritin level shows how large your iron reserve is. Serum iron only measures how much iron is circulating in your blood at that moment; ferritin describes the reserve behind it. That reserve empties before your haemoglobin falls, so a low ferritin can already cause symptoms while your blood count still looks normal. Ferritin also rises with inflammation, infection and liver strain, which is why it can only be read properly alongside a CRP. Commonly used reference values are 30 to 400 µg/l for men and 15 to 150 µg/l for women, but your own laboratory report is what counts.
+€28,-
Iron (Serum) umol/l Serum iron measures the amount of circulating iron in your blood. Iron is essential for haemoglobin production, oxygen transport, and energy metabolism throughout the body.
+€10,-
Magnesium mmol/l Magnesium is an essential mineral involved in over 300 enzymatic reactions in the body, including energy production, muscle and nerve function, blood sugar regulation, and bone development.
+€12,-
Transferrin g/l Transferrin is the main protein responsible for transporting iron in the blood. It carries iron from the gut and storage sites to cells that need it, including bone marrow for red blood cell production.
+€23,-
Zinc umol/l Zinc is an essential trace mineral involved in immune function, wound healing, DNA synthesis, protein production, and cell division. It is required for the activity of over 300 enzymes.
+€45,-

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€69,-

Kidney checkup