Version 2.77


The Duffy glycoprotein is a receptor that binds cytokines released during inflammation. It also binds the malaria parasite Plasmodium vivax, and RBCs that lack the Duffy Fy^a and Fy^b antigens are resistant to invasion. Structurally, the Duffy protein is similar to the family of G-protein coupled receptors, having 7 transmembrane domains FY has two major codominant alleles, FYA and FYB, which result from a SNP (125G→A), and the corresponding Fy^a and Fy^b antigens differ by a single amino acid (G42D). Individuals who are homozygous for a -33T→C SNP in the erythroid promoter region of the FYB allele have the phenotype Fy(a-b-) and do not express Duffy antigens on their RBCs. Beck L, Blood groups and red cell antigens. NCBI Bookself [Internet Book], 2005. Source: National Library of Medicine, Fy^b

Basic Part Properties

Part Display Name
Part Type
Component (Describes the core component or analyte measured)
Created On
Construct for LOINC Short Name
Fy sup(b)

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup$lookup?system=

Language Variants Get Info

Tag Language Translation
zh-CN Chinese (China) Fy^b
Synonyms: F little y super little b
fr-CA French (Canada) F petit y exposant petit b
et-EE Estonian (Estonia) Fy^b
es-ES Spanish (Spain) Fyb
it-IT Italian (Italy) F y minuscola apice b
Synonyms: Fy^b
tr-TR Turkish (Turkey) F küçük y süper küçük b
ru-RU Russian (Russian Federation) F малое y супер малое b
nl-NL Dutch (Netherlands) F kleine y super kleine b
fr-BE French (Belgium) F petit y exposant petit b