Reticulocyte count

This is an important test that is typically used to monitor bone marrow health and diagnose blood conditions.

Venous blood
2 tests included
2 days turnaround



About Reticulocyte count

What is a reticulocyte count?

Reticulocytes are immature red blood cells (RBCs) produced by bone marrow which develop into mature RBCs to replace lost or damaged cells. The turnover of RBCs is a perpetual process in the human body, with the average lifespan of a human RBC being about 120 days. This turnover means that reticulocytes are always present in the blood in low concentrations.

Elevated reticulocyte count can indicate a problem with the blood such as haemolytic anaemia, where RBCs are destroyed faster than they are produced. A reticulocyte count can also be used to assess bone marrow health in disease or following transplant or chemotherapy.  

Why take the test?

This test measures the level of reticulocytes in the blood. It is typically used to monitor bone marrow health and diagnose blood conditions such as haemolytic anaemia.


What's tested

Reticulocyte Count

How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.