Will Cochrane break through to the blood thirsty colleagues? The image is CC by Gaviota Paseandera.
I’ve previously written a two posts on blood transfusions from a surgeons perspective (End of the blood reign and A bloody mess) and I was therefore thrilled when I stumbled upon this [Cochrane review](https://www.ncbi.nlm.nih.gov/pubmed/27731885) that concludes:
The findings provide good evidence that transfusions with allogeneic RBCs can be avoided in most patients with haemoglobin thresholds above 7 g/dL to 8 g/dL.