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Dr. David
Dr. David, Doctor (MD)
Category: Oncology
Satisfied Customers: 45977
Experience:  Experienced Oncology Physician trained in New York City. I'm ready to help.
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How much can hemoglobin vary in a day.

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How much can hemoglobin vary in a day.

Dr. David :

Hello, this is Dr. David. I have read your question and I'm ready to help.

Dr. David :

"The clinical measurement of total hemoglobin has inherent variability. CO-Oximeter and point-of-care (POC) devices that are commonly used to measure hemoglobin have been shown to vary up to ±1.2 and ±1.3 g/dL"

Dr. David :

so you can have more than 1gm/dL of variability

Dr. David :

you can read more here.

Dr. David :

http://www.masimo.com/pdf/sphb/lab5447a.pdf

Dr. David :

let me know if you have questions.

Customer:

That's quite a bit of variability!

Dr. David :

yes, that is quite a bit of variability.

Dr. David :

there is less variability with specific blood testing drawn from your veins.

Dr. David :

but during the day, there can be more hydration which can drop hemoglobin levels or dehydration which can increase hemoglobin levels and other factors as well.

Customer:

That explains why my hemoglobin is higher in the morning. My hemoglobin has been varying between 90 and 104g/L

Dr. David :

hello?

Dr. David :

yes, that is about a gram of variation.

Dr. David :

does my response help?

Dr. David :

do you have other questions?

Customer:

That helps a lot . Thank you.

Dr. David :

you are welcome

Dr. David :

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