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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Low Lymphocyte Count In A Child?

My son is 5 years old and recently had preop blood work done for tonsilectomy and adnoids. His ptt was 38 with the limit being 34. His absolute neutrophil count was 3000 above and his lymphocytes are low. His MCH and MCV were slightly elevated as well. He is not currently sick. But I would say his energy level is low and has been for a few months now. His blood work 6 months ago was perfect. Should I be concerned? We are seeing a hematologist on Wednesday as suggested and his surgery was cancelled.
Wed, 14 Sep 2016
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Pediatrician,  's  Response
OK, let's start with PTT : 38 is not considered prolonged since PTT is highly dependent on blood sampling , any reading above 40 should be repeated before making any diagnosis, so I think 38 is acceptable and don't warrant cancel of the surgery .
the neutrophil count is normal( above 1500 ) , I need to know the total leukocyte count and the number of lymphocytes , lymphopenia or reduced absolute lymphocytic count sometimes can follow an infection , its not a must to have an acute infection .
i think repeating the cbc after 2 weeks is the next step , and I highly suspect it to be normal .
I hope this helps
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What Causes Low Lymphocyte Count In A Child?

OK, let s start with PTT : 38 is not considered prolonged since PTT is highly dependent on blood sampling , any reading above 40 should be repeated before making any diagnosis, so I think 38 is acceptable and don t warrant cancel of the surgery . the neutrophil count is normal( above 1500 ) , I need to know the total leukocyte count and the number of lymphocytes , lymphopenia or reduced absolute lymphocytic count sometimes can follow an infection , its not a must to have an acute infection . i think repeating the cbc after 2 weeks is the next step , and I highly suspect it to be normal . I hope this helps