Blood cells can be separated from plasma to prepare packed cells which is used in  Severe anaemia.  These can be stored in the refrigerator at 4 ^oC to 6 ^oC till used.
    These cells can also be frozen for 10 years at –18 ^oC in glycerol solution.

    The Plasma is separated and frozen within 6 hrs. of phlebotomy and is called Fresh  Frozen plasma (F.F.P) It is used for patients who have coagulation problems.  FFP  contains heat labile coagulation factor V and VIII-C.  In some cases it is used for  blood volume expander during surgery.  It must be used within 24 hrs.  of thawing or   it must be used as a plain plasma (Single Donor Plasma) This SDP doesn’t contain  heat labile coagulation factors. FFP may be stored for 1 year at –18 ^oC.  After that it  become plain plasma and may be stored for 5 years in the freezer.  The fresh plasma  is fractionated for the isolation of vital proteins in concentrate form.

    Platelet rich plasma can be stored from 2-7 days from the day of phlebotomy, in A.C.  room in the Blood bag containing anticoagulant preferably in a ‘Platelet Agitator’.  If Platelet Concentrate is required then it should be infused to patient within 6 hrs. of  preparation of the concentrate ideally.  Platelet concentrate is achieved by pooling  several unit of platelets into one bag.

    Cryoprecipitate is factor VIII C which is also known as anti-haemophiliac factor.  It is  used for people who have Haemophilia.  To prepare Cryprecipitate, FFP is thawed in a 1-6 ^oC water bath or Refrigerator   within 24 hrs after it is frozen Cryprecipitate separates out into a form of white chalky   substance in the FFP bag which can be separated with the use of cold centrifuge at 4 ^oC in satellite Bag.  It can be stored for 1 yr. From the time of phlebotomy at –18 ^oC in.