2 doctors weighed in:
How much blood can you lose before unconsciousness occurs?
2 doctors weighed in

Dr. Nilofer Nisar
Neurology
1 doctor agrees
In brief: Greater than 2 liter
Also depends how quick is the blood loss.
With slow blood loss body system can compensate for that so a person may not have any symptom even if hemoglobin is 8 or 9.

In brief: Greater than 2 liter
Also depends how quick is the blood loss.
With slow blood loss body system can compensate for that so a person may not have any symptom even if hemoglobin is 8 or 9.
Dr. Nilofer Nisar
Dr. Nilofer Nisar
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