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What Causes High WBC Count Inspite Of Being On Nplate Injection?

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Posted on Mon, 15 Jun 2015
Question: I have ITP and take Nplate injection every week. Today I took a CBC and my PLatelets were OK 118 which is high for me. My concern is that my WBC was 20.2 and my HGB was 13.0 I have on infections and not bleeding. . Is a HGB of 13.0 in the normal range for a 70 yr, old male. any Idea what causes my WBC to keep going up?
doctor
Answered by Dr. Anil Parth Desai (49 minutes later)
Brief Answer:
Can you send me your latest blood report with WBC differential count.

Detailed Answer:
Hello sir.I did review your symptoms.

Nplate is Romiplostim. It is a Thrombopoeitin stimulant. Since precursors of RBC, Platelets and WBCs are very closely related to each other, Romiplostim can infrequently cause leukocytosis. Apart from that You are also using hydrocortisone which also can cause leukocytosis especially neutrophilia.

However, what I wanted to see was the differential count of the latest WBC count that you had. Sometimes Romiplostim can cause release of blast cells in peripheral blood in people with a condition known as myelodysplasia.

I would also like to advice you to get a morphological review from a hematopathologist about the morphology of WBC and RBC if it has not been done. Also, if there is any suspicion on the part of doctor there will be a bone marrow study that can be done.

Another common side effects of Nplate are headache and dizziness and muscle aches. many patients have that initially atleast. There are some patients who also have developed thrombus formation but that is relatively uncommon and not to be worried about right now.

As far as your hemoglohin is concerned, it seems borderline low and I am not worried much about it. Only if it drops below 12.5 then we should start investigating for the causes.
So all in all,
Leukocytosis is a infrequent side effect of Nplate as well as hydrocortisone but it needs to be seen which WBCs are increased and what is their morphology(how they look like) so-
1) I would recommend you to send me the latest blood report with WBC differential count and a morphological review of blood slide.
2) Get a morphological review done by a hematopathologist if not done recently and if required in the later stages get a bone marrow study done (but not needed emergently).

I hope this helps.
Let me know if you have any questions or concerns sir.
Wish you all the best.
Sincerely,
Dr Parth Desai.

Above answer was peer-reviewed by : Dr. Prasad
doctor
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Follow up: Dr. Anil Parth Desai (41 minutes later)
Red blood cells count     4.10 - 5.70 M/uL     4.59
Hgb     13.0 - 17.0 g/dL     13.0
Hematocrit     39.0 - 51.0 %     41.1
MCV     80 - 100 fL     90
RDW, RBC     12.0 - 16.5 %     15.1
Differential panel           MAN DIFF
WBC COUNT     3.5 - 12.5 K/uL     20.2
Platelets count     140 - 400 K/uL     118

neutrophils % 30 manual count
lymphocytes % manual count 61%
monos % man count 5
lymphocytes atypical % 4
platelets,bld,ql, man count si decreased
platelets, morphology Giant
macrocytes 1+
microcytes 1+
spherocytes,bld,ql, light microscopy 1+
rouleaux,bld,ql, light microscopy 1+
smudge cells,bld,ql, light microscopy
doctor
Answered by Dr. Anil Parth Desai (11 minutes later)
Brief Answer:
I would advice a flow cytometry analysis of your peripheral blood

Detailed Answer:
Hi I did review your reply query sir.
The WBC count is elevated with predominantly increased lymphocyte count (61%).

I would advice a flow cytometric study of your peripheral blood as well as a bone marrow study in view of lymphocytosis and presence of few atypical lymphocytosis and presence of smudge cells. They are suspicious of a condition known as CLL (chronic lymphocytic leukemia) or it could be reactive lymphocytosis due to some recent infection which can be easily differentiated by flow cytometric study.

Have you noticed any lumps and bumps in your neck or axilla or groin?
Has your spleen been removed for ITP or if not have you noticed any abdominal fullness?

So all in all my recommendations right now are-
1) Flow cytometry analysis of your peripheral blood
2) Bone marrow study with cytogenetics and flow cytometry on it.

I hope this helps.
Let me know if you have any questions or concerns sir.
Wish you all the best.
Sincerely,
Dr Parth Desai.
Note: Do you have more questions on diagnosis or treatment of blood disorders? Ask An Expert/ Specialist Now

Above answer was peer-reviewed by : Dr. Shanthi.E
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Answered by
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Dr. Anil Parth Desai

Pathologist and Microbiologist

Practicing since :2009

Answered : 593 Questions

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What Causes High WBC Count Inspite Of Being On Nplate Injection?

Brief Answer: Can you send me your latest blood report with WBC differential count. Detailed Answer: Hello sir.I did review your symptoms. Nplate is Romiplostim. It is a Thrombopoeitin stimulant. Since precursors of RBC, Platelets and WBCs are very closely related to each other, Romiplostim can infrequently cause leukocytosis. Apart from that You are also using hydrocortisone which also can cause leukocytosis especially neutrophilia. However, what I wanted to see was the differential count of the latest WBC count that you had. Sometimes Romiplostim can cause release of blast cells in peripheral blood in people with a condition known as myelodysplasia. I would also like to advice you to get a morphological review from a hematopathologist about the morphology of WBC and RBC if it has not been done. Also, if there is any suspicion on the part of doctor there will be a bone marrow study that can be done. Another common side effects of Nplate are headache and dizziness and muscle aches. many patients have that initially atleast. There are some patients who also have developed thrombus formation but that is relatively uncommon and not to be worried about right now. As far as your hemoglohin is concerned, it seems borderline low and I am not worried much about it. Only if it drops below 12.5 then we should start investigating for the causes. So all in all, Leukocytosis is a infrequent side effect of Nplate as well as hydrocortisone but it needs to be seen which WBCs are increased and what is their morphology(how they look like) so- 1) I would recommend you to send me the latest blood report with WBC differential count and a morphological review of blood slide. 2) Get a morphological review done by a hematopathologist if not done recently and if required in the later stages get a bone marrow study done (but not needed emergently). I hope this helps. Let me know if you have any questions or concerns sir. Wish you all the best. Sincerely, Dr Parth Desai.