title: A direct radio-immunoassay for plasma delta 4-androstenedione. Application to children.
abstract: A RIA for the estimation of delta 4-androstenedione in human plasma without chromatographic purification is analyzed. Sensitivity, accuracy, precision and specificity are shown to be, at least, equivalent to those of methods involving chromatography.
mesh_terms: D000328:Adult; D000365:Age Determination by Skeleton; D000367:Age Factors; D000735:Androstenedione / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011627:Puberty; D011863:Radioimmunoassay / Q000379:methods
chemical_list: D000735:Androstenedione