Canadian Blood Services is currently in "signal mode".
Michelle Thibodeau says it's just a rallying to get people to come in, donate blood and save lives.
She tells CHSJ News they always encourage people to donate on Holiday weekends because their regular donors are often away.
She says they do see an increase of accidents and they can require up to 50 units of blood which is the equivalent of an entire blood clinic.
The Saint John Blood Donor clinic at 400 University Avenue will be closed on Monday and will reopen Tuesday from 11am to 8pm.
To book an appointment, click here