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how much is 1 unit of blood

1 pint= 450 mL or 1/10th of blood volume

4.6 units of blood are required per patient


Blood to be transfused is mixed with

with 63 ml Citrate Phosphate Dextrose (CPD) anticoagulant or Acid Citrate Dextrose (ACD)


Blood Donor Requirements

o Personal identification information
o at least 17 years of age
o every 56 days for males and every 84 days for females since last donation
o 72 hrs since dental surgery, extraction or root canal
o 6 months since tattooing , ear or body piercing
o < 6mths in malaria area- after one year upon returning to Canada
o > 6 months in malaria area- 3 years upon returning to Canada
o Donor must be in good health
o Weight 50 k
o Full recovery from cold , flu or sore throat
o Cannot donate if had malaria
o Some cancer- After 5 years treatment cancer free ( These include breast, prostate, colon, thyroid and uterine cancer)
o Skin cancer – after treatment
o Homosexual males- I year waiting period
o Male Hgb= 130 g/L – quick test with CUSulf ..sinks too much hemo
o Female Hgb = 125g/L


Ineligible to Donate

• Creutzfeldt jakob disease
Mad cow
• Zika Virus
o People who have taken money or drugs for sex, since 1977 cannot give blood.
o Intravenous use of illegal street drugs
• Disease-e.g. Lupus
• Diabetes ( treated with insulin )
• Chronic Fatigue Syndrome (xenotropic murine leukemia virus-related virus (XMRV).
• Trans individual -Donated Blood is tested for


Donated Blood is tested for

 ABO and Rh group, - HOSIPITAL ( Canadian blood services does the rest)
 Red cell antibody screening
 Syphilis, Hepatitis B (viral DNA) and C( HVC)
 Human immunodeficiency virus - HIV 1 and HIV 2,
 Viral RNA- HIV 1 and HCV
 Human T-Cell lymphotropic viruses HTLV I and II
 West Nile Virus ( when increased risk is present)
 Cytomegalovirus ( CMV) antibody and IgA



Blood is centrifuged
The red blood cells and plasma are both extracted, leaving the buffy coat layer

Pooled buffy coat is then centrifuged a second time, and the platelet rich plasma is extracted through a leukoreduction filter to produce a pooled platelet concentrate.



a filtration process whereby white blood cells are removed. White blood cells often carry viruses and bacteria.


 Whole Blood shelf life

35 days at 1-6ºC

Red blood cells can be used to help accident victims, surgical patients and people with anemia


 Packed Red Blood Cells shelf life

Shelf life: 42 days at 1-6ºC (not all cells are brand new , so keep for half the days so the patient gets almost new cells if they live for 120 days. You cant give a patient blood cells that are 110 days old.
Frozen< -18°C: 10 years



Donation of platelets
The platelets are collected and the rest of the blood is returned to the donor through the same needle

Up to 5 times more platelets can be recovered for a donor
Takes about 75-100 mins
Can donate every 2 weeks
Shelf life: 5 days at 20-24C(RT) with agitation
Platelets can be used to treat leukemia, cancer and thrombocytopenic patients


Albumin donation

for volume replacement


Cryoprecipitate donation

AHF) concentrate of factor VIII, factor XIII, von Willebrand factor and fibrinogen; used for hemophilia A and fibrinogen replacement
Frozen up to one year : stored < -18°C or thawed: stored 20-24C


Factor VIII Concentrate donation

for hemophilia A


Factor IX Concentrate donation

for hemophilia B


Immunoglobulins donation

for immunodeficiency or exposure to infectious diseases such as hepatitis



Blood from donor is collected, centrifuged and the cells are returned to donor through the same needle.
Only plasma is collected
Yields double the volume of a unit of blood
Products: plasma, platelet concentrate, WBCs (to harvest stem cells)
• Donation monthly up to weekly
Fresh frozen plasma: 1 year stored at < -18°C
Thawed plasma < 24 hours stored at 1 to 6C
Plasma is effective in treating patients suffering from burns or shock
Plasma serves as a source of plasma proteins for patients who are deficient in or have defective plasma proteins
Given to patients who require replacement of multiple plasma coagulation factors.


Hematopoietic Progenitor Cells (HPC), Cord Blood

• HPC, Cord Blood contains hematopoietic progenitor cells collected from the umbilical cord and placenta immediately after delivery of a baby
• The cryopreserved HPC, Cord Blood product in the Canadian Blood Services’ Cord Blood Bank (CBB) is stored in liquid nitrogen at -196°C and does not have an expiry date


The HPC, Cord Blood is tested for the following

• ABO group
• Rh type
• Abnormal Hemoglobin
• HLA typing
• Microbial culture testing


The HPC, Cord Blood may be used to treat:

• Malignant hematological and non-malignant diseases
(e.g. leukemia, lymphoma, multiple myeloma, hemoglobinopathies, inherited metabolic disorders)
• Post chemotherapy for cancer treatment).


Blood Bank Component Quality Assurance

Note: All blood received from Canadian Blood Service are visually inspected for deterioration
• bacterial contamination
• discolouration - hemolysis
• Fibrin and clot
• Lipemia
• Icterus

Monitor and record refrigerator and freezer temperatures; refrigerators have continuous monitors and alarm systems.


Blood Collection Principle

5–10 ml of the patient’s blood
should be collected into a pink top or red top tube in order to ensure that plasma or serum, is available for carrying out the compatibility test.



The testing of the patient’s serum against the donor red cells and the donor serum against the patient’s red cells, before transfusion.
it is important that blood of the correct ABO group is used.
must be ABO and Rh compatibility


Patient Identification

blood sample should be clearly labelled with the patient’s full name, hospital unique ID number, ward and signed by the person taking the blood. Sent blood sample immediately to the laboratory, together with a completed blood request form.
The signature of the person taking the blood sample must be on the label and requisition. Samples are rejected if there are no signatures.



1. Print and take computer bar code blood labels to the patient’s bedside
2. Check computer blood labels with patient’s armband.
3. Ask the patient to spell their name and state their DOB to compare with computer blood label and requisition form when possible.



4. Ask the patient to spell their name and state their DOB to verify with blood computer label, requisition form and Health Card. MANDATORY
5. Draw blood samples
6. Label blood samples at the patient’s bedside (inpatient).
7. Label at the patients phlebotomy chair (outpatient)
8. Date and sign the BTL requisition / label(full name)


Manual Specimen Labels

 Patient first and last name
 Patient age
 Unique ID number
 Specimen date.
 Collection time.
 Phlebotomist full name and initial
 The specimen number.


Patient’s requisition.

 First and Last name
 Unique identification number
 The required blood component or blood product and dosage
 Date and time of intended transfusion if available
 Special requirements, if applicable
 Patient’s location
 Name of the ordering physician
 Patient’s date of birth
 Diagnosis and reason for transfusion/infusion
 Priority
 Transfusion history and Pregnancy history
 Signature of the doctor requesting the transfusion



• Healthcare employee signatures, initials and computer identification are retained for ten years or according to established SOP


Blood Component Labeling Standard- ISBT

An international standard for the transfer of information associated with tissue transplantation, cellular therapy and blood transfusion , bar coding


The unit label must include:

• 13 Digit ISBT 128 Donation Number provides unique identification of blood products world wide for a 100 year period
• 13 Digit Donation Number – Facility identification code (global) – Year indicator (won’t repeat for 100 years)
• Product code and Component Description: name of the whole blood or component. Other information
• Blood group code
• ABO/ Rh Blood Group
• Expiration date and time
• Special Testing e.g. antibodies present
• Collection date and time