Immature red blood cells; bone marrow activity.
Blood collection at collection point
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Reticulocytes are young, immature red blood cells produced in the bone marrow and released shortly thereafter into the bloodstream. A reticulocyte test measures the count of reticulocytes in the blood and is an important indicator of the rate of red blood cell production by the bone marrow.
This test is useful for assessing bone marrow health and red blood cell production. It can assist in diagnosing conditions such as anemia or other blood disorders. It is also helpful for monitoring the effectiveness of treatment for certain conditions that affect red blood cell production.
The number of reticulocytes in the blood indicates how well the bone marrow is producing red blood cells. A normal level of reticulocytes suggests a healthy bone marrow that is effectively generating red blood cells.
A high level of reticulocytes may indicate increased red blood cell production, which is often a reaction to situations such as blood loss, anemia treatment, or a condition causing the accelerated destruction of red blood cells. This can suggest recovering bone marrow function in response to treatment.
A low level of reticulocytes can indicate reduced red blood cell production, which may point to bone marrow issues, chronic conditions, or a deficiency in essential nutrients required for red blood cell synthesis, such as iron, Vitamin B12, or folic acid.
This test is included in Dutch healthcare guidelines and is regularly used for its respective indications.
Rationale for this test
Reticulocyten zijn een standaard-bepaling in de Nederlandse zorgrichtlijnen voor de diagnostiek van anemie en andere bloedziekten. De test geeft een betrouwbaar beeld van de beenmergactiviteit en de productie van rode bloedcellen. De klinische betekenis is goed onderbouwd binnen de reguliere geneeskunde.
Dutch clinical guidelines and healthcare organisations
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Answers to what people usually want to know.
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.
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.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
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.
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.
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.
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