MICHAEL DONNE / SCIENCE PHOTO LIBRARY MICHAEL DONNE / SCIENCE PHOTO LIBRARY
Blood sampling. Potential blood donor having a drop of blood collected from a pricked finger. The blood is being drawn up a small capillary tube. The blood will be tested for its haemoglobin levels before a donation is accepted. Haemoglobin is the red-coloured pigment in red blood cells that is involved in oxygen transport. A low concentration of haemoglobin indicates a low red blood cell count (anaemia), meaning that a blood donation could be potentially harmful to the donor. Donated blood is given to patients in transfusions to replace lost blood, for example during surgical procedures or after accidents.
Model release not required. Property release not required.