Label modifier text

Autol release - see disclaimer

This autologous component has tested positive for one or more viral markers but has been released upon request by the patient’s physician. A disclaimer form will accompany these components.

CMV negative

The originating donor sample/donation has been tested for CMV antibody and is negative.

For intrauterine transfusion

A hyper-concentrated red cell component with a haematocrit of 0.70-0.85. After preparation, the expiry is reduced to 48 hours and the component must be irradiated before use.

Once irradiated, the component must be used within 24 hours.

IgA deficient

The originating donor sample/donation has been tested and is IgA deficient.

Low anti-A/B

The originating donor sample/donation has low levels of anti-A/B haemolysins.

Not for neonatal use

The component has been deemed unsuitable for neonatal use due to the presence of red cell antibodies (low titre only).

It should not be transfused to a neonate. 

Not NAT tested

Due to extenuating circumstances (e.g. machine failure or specific clinical demand), this component has been released without nucleic acid technology (NAT) testing being performed. A disclaimer form will accompany these components.

Phenotype reserve

The originating donor sample/donation or, the donor previously, has had an extended phenotype performed, and forms part of a panel of cells reserved for patients with antibodies or where antigen negative blood is otherwise specifically required.

Secretor plasma Le(b+)

The component is from an Le(a-b+) donor and contains soluble H and Lewis antigens (and A or B antigens if the donor is group A or B). May be used to neutralise a recipient’s Lewis or A or B antibodies. Suitable for transfusion.

Suitable for research

The component is deemed unsuitable for clinical use, but may be used for research purposes. (These components will never be issued for transfusion). 

Note: CMV (cytomegalovirus) 

Updated October 2025