Treating patients each day, the medical staff from St George Hospital know all too well how important blood donations are from the community.
So they themselves rolled up their sleeves for vital drops this month.
They were involved in this year's National Health Services Challenge - an initiative from the Red Cross where organisations come together to donate blood, and save lives.
Staff from the hospital made 54 donations as part of the drive.
With nine blood donations, staff from operating theatres were the lead donor department, edging out the Cancer Care Centre who were in second place with five donations.
Four departments - 7B haematology, allied health, the emergency department and gastro hepatology, were joint third with three donations each.
St George Hospital clinical nurse consultant for Blood and Blood Products, Samantha Connelly, says donations will go far and wide.
"There're a vast range of people who need blood products - whether it be for a oneoff treatment, or regular transfusions to stay alive or remain healthy," Ms Connelly said.
"Donated blood can be made into 22 different medical treatments. These treatments can help people being cared for who have cancer, experienced trauma or need to undergo surgery."
Australian Red Cross blood service spokesman, John Feist, says the hospital staff's efforts means 162 lives will be saved.
"The donations are part of the National Health Services Challenge, which runs until the end of June, so there's still time to donate," said Mr Fiest.
The National Health Services Challenge is part of the Red 25 program, where groups and organisations around Australia unite to save lives through blood donation.
Any business, individual or group can donate as part of Red 25. Donations are tracked online, allowing groups to track how many lives they have saved.
Details: Australian Red Cross Blood Service today on 13 14 95 or here.
