So anyone keen to extract blood will have to wait for 12 months.

For example, they might utilize a needle in their tongue to extract blood rather than having the more conspicuous canine fangs (page 37).

However, in special circumstances, and emergency situations, paramedics and physicians sometimes extract blood.

It involves extracting blood from a player and 'spinning' it in a centrifuge to separate the platelets, which are a natural source of healing growth factors and plasma.