Track your blood counts


Enter your latest laboratory blood test result for the specific blood cell type below. Be sure to select the date of the test by using the calendar feature below.

Haematocrit (HCT), or packed cell volume (PCV)


White blood cell (WBC) count, or leukocytes


Haemoglobin (Hgb)


Platelet count


Select date of test

blood counts
Your blood counts have been saved

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Actively track your blood counts and discuss how they compare with your target blood levels

Your blood counts, particularly haematocrit (HCT), white blood cells (WBCs), haemoglobin (Hgb), and platelets, offer important information about the status of your polycythaemia vera (PV). Talk to your healthcare provider about your results after each blood test and discuss how your individual blood results compare with your target blood levels.

The following questions may help you discuss your blood counts with your healthcare provider:

  • What are my target levels for HCT and WBCs?
  • What are my management options if my HCT or WBCs are above the target level?
  • What other factors might influence my blood test results?
  • Why is it important to monitor my blood cell counts to keep PV controlled?
  • Why is it important to know if my blood cell counts are above the target level?

These tracking tools are intended for patients with myeloproliferative neoplasms (MPNs) based in the United Kingdom. Information provided in these tools, including outputs, should not be considered an alternative to advice from a healthcare professional. Other versions of this website are not intended for UK users.

Reporting side effects: If you get side-effects with any medication you are taking, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the information leaflet that comes in the pack. You can report side effects via the Yellow Card Scheme at (UK). By reporting side effects you can help provide more information on the safety of your medication.


UK | 241386 | October 2022

This tool helps you track aspects of
your polycythaemia vera (PV), so you
are prepared for discussions with your
healthcare provider and have a record
of your disease status over time.

Score your symptom severity as often
as you would like. Enter your blood test
or phlebotomy results as needed, after
each procedure.