Antigenic phenotype Lua

Clinical information

Diagnostic Utility:

This test is used to determine whether or not the Lu^a antigen is present on red blood cells. It is part of the red cell phenotyping study. It is also useful in the study of the specificity of irregular antibodies to demonstrate that in the presence of an anti-Lu^a specificity, the individual who developed the antibody is Lu^a negative.

Method:                                             

Hemagglutination.

Reference Values

Possible results are: Negative, Positive.
In case of a doubtful result, for example due to recent transfusions, this is reported and the need for additional studies to unequivocally categorize the Lu^a phenotype is indicated.

Diagnostic Algorithm:

Not applicable.

Turnaround Time:

1 day.

Specimen information

Sample: Whole blood
Tube: EDTA K3 10 ml tube
Minimum volume: 6 ml
Stability:

• At room temperature: 2 days
• In the refrigerator: 2 days

Transport instructions: Preferably at room temperature
Reason for rejection: Highly hemolyzed sample

Administrative information

BST Code: 0535
Test Description: Antigen Lu^a phenotype
Synonyms: Ag Lu^a
Section: Immunohematology
BST Rate: Check the updated rates here.

Profiles:

Test 0535 Antigen Lu^a is performed within the following profiles:

References

AABB Technical Manual. 19th edition. Editat per MK Fung, AF Eder, SL Spitalnik, CM Westhoff: AABB 2017