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BBloedCheckupLab made simple
  • Tests
    • Test packages
    • Hormones
    • Cardiovascular
    • Thyroid
    • Vitamins
    • STD test guide
    • Custom test request
    View all tests
  • At-home tests
    • Fingerstick
    • Urine
    • Stool
    • Saliva
    • Hair
    • Swab
    View all at-home tests
  • How it works
    • How it works
    • Locations
    • Laboratories
    • Fasting guidance
    • Shipping
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Blood draw

Soluble Transferrin Receptor (sTfR)

sTfR; for iron deficiency versus inflammation.

€ 60,00

Blood collection at collection point

How it works

  1. 01

    Order your test

    After your order you receive instructions by email

  2. 02

    Schedule your appointment

    Make an appointment at a collection point near you

  3. 03

    Visit the collection point

    Blood collection at 1,000+ locations across the Netherlands

  4. 04

    Receive your result

    Digitally by email once the analysis is complete.

See how it works

Blood collection at collection point

How it works

See how it works
  1. 01

    Order your test

    After your order you receive instructions by email

  2. 02

    Schedule your appointment

    Make an appointment at a collection point near you

  3. 03

    Visit the collection point

    Blood collection at 1,000+ locations across the Netherlands

  4. 04

    Receive your result

    Digitally by email once the analysis is complete.

See how it works

What is Soluble Transferrin Receptor (sTfR)?

The Soluble Transferrin Receptor (sTfR) is a biomarker that circulates in the blood and plays a role in iron transport in the body. It reflects the amount of transferrin receptor that detaches from the cell surface, which is directly related to the body's iron requirement.

Why should you have sTfR tested?

Testing sTfR is useful for assessing the body's iron status, especially in cases where other tests such as serum iron or ferritin may not provide a clear picture. It is particularly useful in diagnosing iron deficiency or in distinguishing iron deficiency anemia from other forms of anemia.

What does it indicate?

An sTfR test indicates the amount of iron available for red blood cell production. It helps determine whether the body has enough iron for normal blood formation and reveals iron deficiency before it becomes apparent in standard blood tests.

What does a high sTfR level mean?

A high level of sTfR indicates an increased need for iron or a lack of iron in the body. This may suggest iron deficiency anemia or increased erythropoiesis (red blood cell production).

Indication-specific evidence

This test has clinical value for specific complaints or indications, but is not intended as screening without symptoms.

Rationale for this test

Deze test heeft klinische waarde bij het onderscheiden van ijzertekortanemie van andere vormen van anemie, vooral wanneer ontstekingsparameters de interpretatie van ferritine bemoeilijken. De test wordt gebruikt in gespecialiseerde diagnostiek binnen de Nederlandse zorg, maar is geen standaard eerste-lijns bepaling. Voor de meeste mensen met vermoeden van ijzertekort zijn standaard ijzerparameters (ferritine, Hb, MCV) voldoende.

Sources consulted

Dutch clinical guidelines and healthcare organisations

  • Transferrine receptor.soluble [massa/volume] in serum of plasma
  • [PDF] Diagnostische waarde van een beknopt anemieprotocol gebaseerd ...

International scientific literature

  • Value of Soluble Transferrin Receptors and sTfR/log Ferritin in the Diagnosis of Iron Deficiency Accompanied by Acute Infection - PMC
  • Soluble transferrin receptor-ferritin index in the evaluation of anemia in inflammatory bowel disease: a case-control study - PMC

Independent information sources

We recommend consulting these independent sources before ordering a preventive health check.

  • Client brochure PGO (NVvPG, September 2023)

    Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.

  • RIVM — Health tests

    Independent information about preventive health checks from the National Institute for Public Health and the Environment.

  • Thuisarts.nl

    Reliable patient information about illnesses and complaints from Dutch GPs (NHG).

  • Allesovertesten.nl (NVKC)

    Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.

Frequently asked questions

Answers to what people usually want to know.

How does it work from order to result?

After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.

How quickly can I get tested?

Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For specialist analyses we first ship collection materials, which takes a bit longer.

Do I need to book an appointment?

At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.

Do I need to fast before the test?

That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.

When and how do I receive my result?

It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.

Where can I go for collection?

We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.

View all frequently asked questions

Didn't find what you're looking for? Request a custom test

Need help?

We're here for you. Send a message and we'll respond as soon as we can.

WhatsAppWhatsApp+31 412 236 961E-mailinfo@bloedcheckup.nlCollection points1,000+ across the Netherlands

Weekdays 09:00 – 17:00 · Outside hours we reply a bit later

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My experience was very positive. I needed to pass several very specific tests. They provide 24/7 customer support. They were friendly and prompt.

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Received a packet with everything needed, went to a walk in clinic (Amsterdam DC Clinic) where my blood was drawn and I was out the door within 5 minutes, and then after posting the samples, received results 2 days later. Results were easy to understand as well. Amazing service, would highly recommend!

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