From the link in the article: https://www.lifeblood.com.au/blood/learn-about-blood/plasma/anti-D https://www.lifeblood.com.au/blood/learn-about-blood/plasma/...

From the link in the article: https://www.lifeblood.com.au/blood/learn-about-blood/plasma/anti-D https://www.lifeblood.com.au/blood/learn-about-blood/plasma/... it sounds like they test people who are RH negative who give plasma. So if you know you are a RH negative man or woman past childbearing years you can donate plasma and ask. I've given plasma before and it wasn't mentioned but I'm RH+.