CHATTANOOGA, TN (WRCB) - Blood Assurance says its bank is so low, they can't fill hospital orders.

Their blood supplies are decreasing rapidly.

They're extending hours at all their locations Saturday until 5 pm, so stop by if you can.

Blood Assurance will be open from 9 am to 5 pm at the following locations:

- Downtown Chattanooga (across from UTC McKenzie Arena)

- Hixson

- Cleveland

- Fort Oglethorpe (open until 1 pm)