How long Human Blood can be stored in blood Bank ?

Question

How long the human blood can be stored in blood bank ? How they preserve it?will they add any preservative ?,what temperature it s stored ?Before trans fussion How they make it to normal temperaute? Will they mix a group of blood ? or keep seperate seperate ?.I need bit clear answer (even thogh it is out of my subject I lke to know)

Answer 1

In the blood bank they normally seperate the blood according to Group & Cloatting time as it varies from person to person.

Generally those blood kept stored under minus 4 deg cel can stay for a period of 90 days for transfusion provided the temperature is maintained all the time.

Before transfusion the stored blood with its pack will be left in closed conainer having salt water to return to normal liqiud stage. Before transfusion the blood and saline solution will mixed together and the transfusion is done.

Answer 2

The National Blood Service in the UK has loads of answers to these questions, they currently have almost 12 days stock of the most common bllod type and as little as three days for the less common bloods.

Answer 3

At the normal storage standards = 20 days

when freeze dried, plasma = 4 months,
when freeze dried, blood = 2 months
when frozen with liquid nitrogen, cord blood = 15-25 years.
when frozen with liquid nitrogen, blood = 1 year.

Answer 4

Donated blood only lasts 28-42 days. Platelets, which contain clotting agents, last only 5 days.

Answer 5

Until someone needs it...

Anyway, the blood is separated into red blood cells, white blood cells and plasma. So if you donate your blood, 3 people can actually benifit!

Answer 6

http://www.psri.net/bloodbank.htm

government site

http://www.fda.gov/ora/inspect_ref/igs/blood.html