Clinical information
Diagnostic Utility:
This test is used to determine whether the Fyb 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-Fyb specificity, the person who has developed the antibody is Fyb 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 Fyb 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 Fyb
Synonyms: Ag Fyb
Section: Immunohematology
BST Rates: Check the updated rates here.
Profiles:
Test 0521 Antigen phenotype Fyb is performed within the following profiles:
| Profile | Included Tests |
|---|---|
| Duffy System |
0520 Fya 0521 Fyb |
|
Extensive Phenotype |
0500 Rh D 0501 Rh C 0502 Rh c 0503 Rh E 0504 Rh e 0510 Kell 0511 Cellano 0512 Kpa 0513 Kpb 0520 Fya 0521 Fyb 0530 Jka 0531 Jkb 0535 Lua 0536 Lub 0540 Lea 0541 Leb 0545 P1 0550 M 0551 N 0552 S 0553 s |
References
AABB Technical Manual. 19th edition. Editat per MK Fung, AF Eder, SL Spitalnik, CM Westhoff: AABB 2017
Quality
BST holds ISO 9001, ISO 14001, and OSHAS 18001 quality certifications, as well as the European Excellence 500+ seal. BST is accredited by CAT, JACIE-FACT, FACT-NETCORD, and EFI, and complies with Good Manufacturing Practice (GMP) and Good Distribution Practice (GDP) guidelines.