The American Red Cross says it’s down to less than a five-day supply of blood, so it is issuing an emergency call for blood and platelet donations.

Patty Corvaia is communications manager for Red Cross Blood Services in the New York-Pennsylvania region.

"We're asking all blood donors to come in and donate blood at this time because it's really, really a serious situation," she said.

She says donations have fallen short of hospital needs in recent months, and donations generally drop in the summer months.

Corvaia says by taking one hour to donate, three lives can be saved.

"What many people don't know as well is that it takes up to 100 units of blood to save one accident victim," she said.

Corvaia says Rochester is unique with four blood donation centers in the area.

To make an appointment, use the Blood Donor App, visit redcrossblood.org, or call 1-800 RED CROSS.

All types of blood are needed, especially O negative, A negative and B negative.

Upcoming blood donation opportunities

American Red Cross Blood Donation Centers:

Greece Blood Donation Center

2590 West Ridge Rd., Buckman’s Plaza

Rochester, NY 14626

Monday-Thursday 11:30 a.m.-7:00 p.m.

Saturday-Sunday: 7:00 a.m.-2:30 p.m.

Perinton Blood Donation Center

Perinton Hills Shopping Center

6687 Pittsford-Palmyra Rd.

Fairport, NY 14450

Monday:  11:30 a.m.-7:00 p.m.

7:00 a.m.- 2:30 p.m.

11:30 a.m. -7:00 p.m.

Rochester Blood Donation Center

50 Prince St.

Rochester, NY 14607

Tuesday & Thursday: 11:30 a.m.- 6:00 p.m.

Friday:  9:00 a.m.- 1:00 p.m. (second and fourth Friday of each month)

Saturday: 8:00 a.m.- 1:00 p.m. (first and third Saturday of each month)

West Henrietta Blood Donation Center

825 John St.

West Henrietta, NY 14586

Monday:  11:30 a.m. – 7:00 p.m.

Tuesday: 7:00 a.m.- 2:30 p.m.

Wednesday- Thursday:  11:30 a.m.- 7:00 p.m.

Friday-Sunday:  7:00 a.m.- 2:30 p.m.

Livingston

Caledonia

7/18/2016: 1:30 p.m. - 7 p.m., First Presbyterian Church, 3080 Main St.

Dansville

7/12/2016: 10 a.m. - 4 p.m., Noyes Memorial Hospital, 111 Clara Barton St.

Geneseo

7/11/2016: 2 p.m. - 7 p.m., Livingston County Government Center, 6 Court St.

7/15/2016: 11:30 a.m. - 3:30 p.m., Lattimore of Geneseo Physical Therapy,

4577 Morgan View Rd.

Livonia

7/21/2016: 1 p.m. - 6 p.m., United Methodist Church, 21 Summers St.

Monroe

Brockport

7/13/2016: 12 p.m. - 7 p.m., Sweden Clarkson Community Center, 4927 Lake Rd.

7/28/2016: 10 a.m. - 2:30 p.m., State University of New York at Brockport Seymour College Union, 350 New Campus Dr.

7/28/2016: 12 p.m. - 5 p.m., Brockport Lodge 2110, 4400 Sweden Walker Rd.

Churchville

7/16/2016: 9 a.m. - 2 p.m., Open Door Baptist Church, 350 Chili-Scottsville Rd.

7/25/2016: 1 p.m. - 6 p.m., Riga Town Hall, 6460 Buffalo Rd.

Fairport

7/26/2016: 9 a.m. - 2 p.m., Manning and Napier Fairport, 290 Woodcliff Dr.

Hilton

7/12/2016: 1 p.m. - 7 p.m., Hilton Fire Department, 137 South Ave.

Honeoye Falls

7/20/2016: 2 p.m. - 7 p.m., Honeoye Falls Ambulance, 210 East St.

Mendon

7/25/2016: 1 p.m. - 6 p.m., St. Catherines Church Monsignor Schnacky Community Center,

26 Mendon Ionia Rd.

Penfield

7/9/2016: 9 a.m. - 2 p.m., YMCA Eastside, 1835 Fairport Nine Mile Point Rd.

Rochester

7/6/2016: 7 a.m. - 1 p.m., Rochester General Hospital, 1425 Portland Ave.

7/6/2016: 10 a.m. - 3 p.m., Rochester Outpatient Clinic, 465 Westfall Rd.

7/7/2016: 10 a.m. - 4 p.m., Rochester General Hospital, 1425 Portland Ave.

7/8/2016: 11:30 a.m. - 5:30 p.m., Rochester General Hospital,1425 Portland Ave.

7/9/2016: 8:30 a.m. - 1:30 p.m., St. Kateri Tekakwitha at Christ the King Church,

445 Kings Hwy.

7/11/2016: 11 a.m. - 3 p.m., Dorschel Automotive, 3817 W. Henrietta Rd.

7/11/2016: 1 p.m. - 6 p.m., I Square, 400 Bakers Park

7/11/2016: 1 p.m. - 6 p.m., Browncroft Community Church, 2530 Browncroft Blvd.

7/12/2016: 9 a.m. - 2 p.m., Bank of America, One East Ave.

7/12/2016: 10:30 a.m. - 4:30 p.m., University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave.

7/13/2016: 9 a.m. - 2 p.m., City Place, 50 W Main St.

7/15/2016: 10 a.m. - 2 p.m., Strong Donor Room, 601 Elmwood Ave.

7/15/2016: 12 p.m. - 5 p.m., Islamic Center of Rochester, 727 Westfall Rd.

7/16/2016: 12 p.m. - 4 p.m., Sahlens Stadium, 460 Oak St.

7/20/2016: 2 p.m. - 7 p.m., Northridge Church, 2052 St. Paul St.

7/21/2016: 4 p.m. - 8 p.m., Rochester General Hospital, 1425 Portland Ave.

7/22/2016: 1 p.m. - 6 p.m., Pearce Memorial Church Family Life Center, 2301 Westside Dr.

7/23/2016: 9 a.m. - 2 p.m., Bill Gray's Regional Iceplex, 2700 Brighton Henrietta Town Line Rd.

7/23/2016: 9 a.m. - 2 p.m., Ridge Culver Fire Department, 2960 Culver Rd.

7/23/2016: 10 a.m. - 3 p.m., Greece Volunteer Ambulance, 867 Long Pond Rd.

7/23/2016: 10 a.m. - 3 p.m., St. Lawrence Church, 1000 N. Greece Rd.

7/24/2016: 8 a.m. - 12 p.m., Naval and Marine Reserve Center, 439 Paul Rd.

7/27/2016: 9 a.m. - 2 p.m., Eagles Landing Business Park, 1565 Jefferson Rd.

7/27/2016: 10 a.m. - 3 p.m., Nazareth College, 4245 East Ave.

7/27/2016: 10:30 a.m. - 3:30 p.m., Rochester City School District Office, 131 W Broad St.

7/28/2016: 10 a.m. - 3 p.m., Westside Family YMCA, 920 Elmgrove Rd.

7/29/2016: 9:30 a.m. - 3:30 p.m., Highland Hospital, 1000 South Ave.

7/29/2016: 10 a.m. - 2 p.m., Strong Donor Room, 601 Elmwood Ave.

7/29/2016: 1:30 p.m. - 6:30 p.m., Chili Fire Department, 3231 Chili Ave.

7/30/2016: 9 a.m. - 2 p.m., St Paul Boulevard Fire Department, 433 Cooper Rd.

Rush

7/20/2016: 2 p.m. - 7 p.m., Rush Fire Department, 1971 Rush Mendon Rd.

Spencerport

7/18/2016: 1:30 p.m. - 6:30 p.m., Calvary Chapel of the West Side, 2407 Union St.

Webster

7/5/2016: 1 p.m. - 6 p.m., Masonic Lodge 538, 30 Orchard St.

7/25/2016: 10 a.m. - 4 p.m., United Methodist Church of Webster, 169 E. Main St.

Ontario

Canandaigua

7/14/2016: 2 p.m. - 7 p.m., Randall Farnsworth Auto Group, 5375 Thomas Rd.

7/20/2016: 9 a.m. - 3 p.m., Ontario ARC, 3071 County Complex Dr.

7/26/2016: 2 p.m. - 7 p.m., Crosswinds Wesleyan Church, 3360 Middle Cheshire

Clifton Springs

7/6/2016: 2 p.m. - 7 p.m., Clifton Springs Hospital, 2 Coulter Rd.

Geneva

7/7/2016: 12 p.m. - 4 p.m., North Street Elementary School, 400 W North St.

7/26/2016: 1 p.m. - 7 p.m., Belhurst Castle, 4069 Route 14 South

7/29/2016: 1 p.m. - 5 p.m., Finger Lakes Community College, 90 Pulteney St.

Naples

7/11/2016: 2 p.m. - 7 p.m., Naples Fire Hall, 2 Race St.

Victor

7/18/2016: 2 p.m. - 7 p.m., Willowbrook Christian Church, 619 High St.

Wayne

Lyons

7/17/2016: 10 a.m. - 4 p.m., Peppermint Days Festival, 35 William St.

7/19/2016: 2 p.m. - 7 p.m., Lyons Community Center, Manhattan St.

Macedon

7/25/2016: 1 p.m. - 6 p.m., Macedon Public Library, 30 Main St.

Newark

7/15/2016: 10 a.m. - 3 p.m., Rochester General Health System- Newark Wayne,

Driving Park Ave.

7/19/2016: 2 p.m. - 7 p.m., American Legion Post 286, 200 East Union St.

Ontario

7/22/2016: 9 a.m. - 2 p.m., Ginna Station, 1503 Lake Rd.

Walworth

7/20/2016: 2 p.m. - 7 p.m., Walworth Fire Department, 2178 Church St.

Williamson

7/8/2016: 1 p.m. - 6 p.m., Williamson Middle School, 4184 Miller St.