[Laboratory findings in cerebrospinal fluid in relation to age: trivariate evaluation of albumin and immunoglobulin G concentrations (author's transl)]. 1978

W Bernhardt, and B Weisner, and W Rehpenning

In cerebrospinal fluid from controls ("non-diseased probands", n = 326) the following variables were determined: albumin and immunoglobulin G (by immunodiffusion) and total protein. Total protein rose parallel with the age of the subjects (r = 0.319); the albumin fractions (r = 0.126) and immunoglobulin G (r = 0.144) also correlated with age. The concentrations of albumin and immunoglobulin G were correlated even more closely (r = 0.589), leading to a particularly slender form of the elliptic bivariate normal range. The correlation of the variables albumin and immunoglobulin G with each other and with age was drawn upon as additional information, in order to discriminate between laboratory findings from diseased and from non-diseased subjects: a trivariate area of reference ("trivariate normal range") was calculated, which avoided errors of the second kind (diseased values not recognized) more powerfully than the usual one-dimensional ranges (x +/- 2s or percentile).

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D002556 Cerebrospinal Fluid Proteins Proteins in the cerebrospinal fluid, normally albumin and globulin present in the ratio of 8 to 1. Increases in protein levels are of diagnostic value in neurological diseases. (Brain and Bannister's Clinical Neurology, 7th ed, p221) Proteins, Cerebrospinal Fluid,Fluid Proteins, Cerebrospinal
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000367 Age Factors Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time. Age Reporting,Age Factor,Factor, Age,Factors, Age
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000418 Albumins Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating. Albumin

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