Reference values for selected enzyme activities and protein concentrations in serum and plasma derived from cord-blood specimens
Freer, D.E.; Statland, B.E.; Johnson, M.; Felton, H.
Clinical Chemistry 25(4): 565-569
1979
ISSN/ISBN: 0009-9147 PMID: 38019 Document Number: 142163
Activities of 6 enzymes, 3 isoenzymes and 12 specific proteins in 81 cord-blood specimens were measured. The following mean values (and ranges) were found, all in U neonates were comparable to adult values for .alpha.1-antitrypsin, .alpha.2-macroglobulin, immunoglobulin IgG and orosomucoid. Neonatal values were significantly lower than adult values for .alpha.1-antichymotrypsin, complement C3, ceruloplasmin and transferrin. Concentrations of complement C4 (in plasma), haptoglobin and the immunoglobulins IgA and IgM were usually undetectable.
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