The Blood Signal is a call-to-action for donors at times of critical need.
During these times, the Blood Service will activate the Blood Signal on social media and radio.
It will only be activated during times of critical need, with the aim of making it one of the most powerful symbols in the nation.
The Blood Service will activate the signal so that donors and non-donors can help spread the word of Australia's need for blood.
When you see the Blood Signal, it means we need donors immediately.
Even if you can’t donate, you can share the Blood Signal on email or social media to encourage friends to give in your place.
Every donation you make or encourage can help save three lives, including those of cancer patients, unborn babies, mothers giving birth, road trauma victims, burns victims, and people who need kidney dialysis.
How can you help?