Worried about two year olds blood results

[ivy621]

I’m worried about my two year olds blood results, she has to have them repeated.
5 things have flagged up but my mains concern is

Haemoglobin 168 g/L it states normal for her age is between 120-140
Red blood count 6.02 it states normal is 4.10-5.50
Haematocrit 0.49 it states normal is 0.36-0.4

It seems everything red blood related is all raised together?
Lymphocytes also slightly raised and monocytes slightly low.

Does anyone have any experience with a young child with high RBC’s and what caused it? Trying not to worry but being honest I can’t think about anything else and I’m praying the next test looks more normal!
as a side note she’s a really good drinker and her Urea was also checked and it was normal so she wasn’t dehydrated
Any advice or reassurance appreciated
Thanks!

Given it can be caused by dehydration, and our recent warm weather, that would be a very simple and benign explanation. Also why repeat tests probably asked for - despite urea being normal.

Lymphocytes up and monocytes down is common after a virus.

Your GP will know best if there are other underlying factors pointing to anything more serious.

Do you have gas (eg boiler) at home, and if so, do you have a carbon monoxide monitor?

Thank you for replying. I’m really hoping it is something benign like that.

Yes we do have a carbon monoxide monitor

Fingers crossed for you. I'm sure you've been googling, carbon monoxide can cause erythrocytosis. But the first thing in the NICE guide about it says it can be an incidental finding and repeat the test in a week. Your GP/doctor is doing exactly the right thing. There's a good chance this is a blip.

Thank you, they said to repeat the test in 4 weeks so I have another almost 3 weeks of waiting. There are certain symptoms that lead me to believe we will get the same result but hopefully it is just a blip.