Allowable Blood Loss (ABL) Calculator
Online calculator to find the maximum loss of blood allowable for a person. It is based on initial and final hematocrit, weight and average blood volume.
ABL Calculation
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Gender:
Male
Female
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Weight (kg):
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Hi (%):
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Hf (%):
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Average Blood Volume (ml/kg):
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Allowable Blood Loss (mL)
Formula:
| ABL = EBV x [ ( Hi - Hf ) / Hav ] |
| Where, |
| ABL =Actual Blood loss, |
| EBV = Estimated Blood Volume, |
| Hi = initial Hematocrit, |
| Hf = final Hematocrit, |
| Hav = average of (Hi and Hf). |
Formula:
| ABL = EBV x [ ( Hi - Hf ) / Hav ] |
| Where, |
| ABL =Actual Blood loss, |
| EBV = Estimated Blood Volume, |
| Hi = initial Hematocrit, |
| Hf = final Hematocrit, |
| Hav = average of (Hi and Hf). |
During surgery, allowable blood loss (ABL) calculator can be used by the surgeons to determine a patient's blood loss limit. This calculation can be applied for haemorrages too.