Antigen Phenotype Fyb

Clinical information

Diagnostic Utility:

This test is used to determine whether the Fy^b antigen is present on red blood cells. It is part of the red blood cell phenotype study. It is also useful in the investigation of irregular antibodies specificity to demonstrate that in the presence of an anti-Fy^b specificity, the person who has developed the antibody is Fy^b negative.

Method:                                            

Hemagglutination.

Reference Values

Possible results: Negative, Positive.
If the result is inconclusive due to previous transfusions or because the sample has a positive direct antiglobulin test, this will be reported and further studies will be recommended for the unequivocal categorization of the Fy^b phenotype.

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 refrigeration: 2 days

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

Administrative information

BST Code: 0521
Test Description: Antigen phenotype Fy^b
Synonyms: Ag Fy^b
Section: Immunohematology
BST Rates: Check the updated rates here.

Profiles:

Test 0521 Antigen phenotype Fy^b is performed within the following profiles:

References

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