Egg yolk serum albumin
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About Alpha-livetin (Gal d 5)
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About Alpha-livetin (Gal d 5)
Overview and History
Alpha-livetin (Gal d 5) is a protein belonging to the serum albumin family, produced by chickens and present in egg yolk and some poultry tissues. Biochemically it behaves like other albumins—binding small molecules and contributing to nutrient and protein transport in egg components. The protein is relatively heat‑labile compared with some egg white proteins.
Clinically, Gal d 5 gained attention because immune reactivity to this albumin can overlap with responses to inhaled bird proteins or poultry meat, a pattern often described in cross‑reactivity studies. Its relevance in testing comes from being a distinct egg‑yolk–related antigen that can help separate yolk‑linked immune patterns from those driven by egg white proteins or other food families.
Interpreting Highs and Lows
Elevated IgA or IgG responses to alpha‑livetin may indicate prior immune exposure or sensitization to egg yolk or structurally related poultry proteins, and can suggest cross‑reactivity with bird or poultry antigens. Elevated IgA responses are often interpreted as evidence of mucosal/gut‑level activity, while IgG elevations suggest more systemic immune engagement. Low or absent antibody levels generally mean there is no measurable IgA/IgG response to this marker at the time of testing. All results should be interpreted alongside other Food Zoomer markers, clinical history, and symptoms to understand broader immune patterns rather than as standalone findings.
Featured Test
Food Zoomer includes alpha‑livetin to capture egg‑yolk and poultry‑related immune signals that might not be detected by egg‑white markers alone. Measuring Gal d 5 across IgA and IgG helps providers distinguish mucosal versus systemic responses and reveals cross‑reactivity patterns that inform targeted, pattern‑based nutrition planning and reintroduction strategies.
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Mary Beth Augustine
DCN, RDN, FAND- Lead Clinical Educator
Suzanne Barker
MS, RDN, LD, CTTS, CGP- Clinical Educator
Suzette Garcia
MSc- MHNE- Clinical Educator
Brooke Mader Ganev
MS, CNS, LDN, FDN- Clinical Educator
Adair Anderson
MS, RDN, LDN- Clinical Educator
Lillie Luu Nguyen
DCN, CNS, LDN- Clinical Educator
Jason Barker
ND- Clinical Educator
Emaline Brown
ND- Clinical Educator
Dana Filatova
DCN, CNS, LDN- Clinical Educator
Jessy Dhanjal
ND- Clinical Educator
Nour Amri
MS, LDN, CNS, CKNS- Clinical Educator
