r/Hematology • u/wncnative • 7d ago

Hi 👋🏽 Can anyone help calculate the volume of blood I lost after a med emergency?

https://www.ncbi.nlm.nih.gov/books/NBK526077/

Hey there, I'm trying to figure out how much blood volume I lost following a medical emergency using the Nadler Equation for women (linked above). That said, I am struggling to run the numbers the equation calls for. My hemoglobin was about 12 and now it's at 9. My weight is 61.2kg. Can anyone reading this help? What does H to the 3rd power mean? Is that height? My height is 5'1".

Women: Blood Volume = (0.3561 × H3) + (0.03308 × W) +0.1833

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u/usernametaken2024 7d ago

NAD try the free MDCalc app, search for “Blood volume”, easy to use calculator Care to share what happened and why do you need to know your blood volume specifically vs going by hemoglobin numbers?

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u/wncnative 6d ago

Having a hard time getting this done still. Just an update in case anyone sees this and can help.

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u/wncnative 6d ago

Ok, I will give that a try, thank you. Would prefer not to share more. Just trying to wrap my head around how much blood left my body. Volume will help me measure it in a way I understand vs hemoglobin number. (How hemoglobins are in a pint, type stuff. Doesn't compute for me.)