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a group of serum alpha2-globulin glycoproteins that bind free hemoglobin; three phenotypes, with differing abilities to bind hemoglobin, are distinguished electrophoretically.


Abbreviation for haptoglobin.


A gene on chromosome 4q11-q13 that encodes alpha-fetoprotein, a major plasma protein produced by the yolk sac and the liver during foetal life. AFP is regarded as the foetal counterpart of serum albumin and binds copper, nickel, fatty acids and bilirubin; hereditary persistance of alpha-fetoprotein may be found in individuals with no obvious pathology.

Molecular pathology
AFP is elevated in foetuses with neural tube defects, including spina bifida and anencephaly. It is elevated in adults with hepatocellular carcinomas and germ cell tumours.


Health professional, see there.


haptoglobin, a serum protein that binds free hemoglobin.
References in periodicals archive ?
The burgeoning global problem of physical inactivity [13,14], and the need for population surveillance and inter-country comparisons, has led to the development of the IPAQ measure.
76 for the short form) with correlated but not directly comparable data from the short and the long version 7 and they demonstrated that IPAQ instruments have acceptable measurement properties for monitoring population levels of physical activity among 18- to 65-year-old adults in diverse settings.
On the other hand, in the study of Hagstromer et al [6] a relatively weak, although significant, correlation between both total and moderate PA derived from the IPAQ and aerobic fitness was found.