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What Should Be The Haemoglobin Level In The Blood Before A Blood Transfusion?

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Posted on Mon, 5 Sep 2016
Twitter Mon, 5 Sep 2016 Answered on
Twitter Thu, 22 Sep 2016 Last reviewed on
Question : how low does your blood level need to go before you need a blood transfusion? I am a male 74 years old.
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Answered by Dr. Scott Rebich (12 minutes later)
Brief Answer:
Generally hemoglobin on 7

Detailed Answer:
Hi there,

I've seen people as low as a hemoglobin of 3. The normal should be above at least 13.5. Complications generally start around 7 so we recommend everyone who is anemic get transfused once levels get to 7. That is of course if you are a health person without medical problems. If there is underlying heart disease, then we transfuse earlier.

I hope this helps.
Above answer was peer-reviewed by : Dr. Raju A.T
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Answered by
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Dr. Scott Rebich

Internal Medicine Specialist

Practicing since :2015

Answered : 283 Questions

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What Should Be The Haemoglobin Level In The Blood Before A Blood Transfusion?

Brief Answer: Generally hemoglobin on 7 Detailed Answer: Hi there, I've seen people as low as a hemoglobin of 3. The normal should be above at least 13.5. Complications generally start around 7 so we recommend everyone who is anemic get transfused once levels get to 7. That is of course if you are a health person without medical problems. If there is underlying heart disease, then we transfuse earlier. I hope this helps.