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Quality Control of Donor Selection and Blood Collection

You are here : Home/ Blood Bank Zone/ Donor selection and Blood collection/ 8. Quality Control of Donor Selection and Blood Collection

8. Quality Control of Donor Selection and Blood Collection

1. Proper selection of donors

Stringent criteria must be followed for selection of donors. Recruitment of voluntary non paid donors provides safe and good quality blood. A detailed medical history and clinical examination will ensure that donors are in good health. Donors with high risk behaviour must be deferred permanently.

2. Collection of blood

a. Adequate aseptic precautions as discussed, should be taken during collection of blood.

b. The reagents used for cleaning the venepuncture site such as chlorhexidine (Salvon), iodine and methylated spirit may be sent at periodic intervals for bacteriologic examination.

c. Bacterial and fungal culture may be done from the venepuncture site after cleaning to ensure the adequacy of the cleaning procedure.

d. The blood collection bag should be inspected before collection of blood for leaks or breakes in the bag and clarity of the anticoagulant. The anticoagulant solution should also be sent for bacteriologic examination.

e. Blood should be mixed continuously during the procedure so that no clotting occurs. This can be done manually or by using automated mixing equipment.

f. The flow of blood should be continuous. The volume of blood collected should be monitored using a balance.

g. The time of collection of blood should not be more than 5-8 minutes specially if the blood unit has to be processed for component preparation.

3. Quality control of whole blood volume

For quality control of whole blood volume weigh at least 1% of donations & calculate the volume collected.

Vol (ml) = (Weight of bag + blood (g) - Weight of empty bag (g) )/ 1.05

350m1 of blood is collected from donors weighting 45 kg or more. If the donor weights more than 55 kg, 450 ml may be collected. Volume of anticoagulant should be proprortionate to the volume of blood.

4. Transfusion transmitted diseases

All units should be screened for 1-IBsAg, HIV-antibodies, syphilis and malarial parasites. The result of the testing should also be recorded. All the laboratory tests should be performed following strict quality control procedures.

5. Grouping and unexpected antibody for screening

Blood grouping and screening for unexpected antibodies must be done. The quality control of antisera and other reagents should be done.

The technique of blood grouping should be monitored by the medical officer.

6. Emergency kit

The drugs in the emergency kit should be checked periodically and expired drugs should be discarded.

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