MadersbacherSKlieberRMannKMarthCTabarelliMWickGFree α-subunit, free β-subunit of human chorionic gonadotropin (hCG) and intact hCG in sera of healthy individuals and testicular cancer patients. Clin Chem1992; 38: 370–6.
2.
ColeLARestrepo-CandeloHLavyGDecherneyA. HCG free β-subunit an early marker of outcome of in vitro fertilization clinical pregnancies. J Clin Endocrinol Metab1987; 64: 1328–30.
3.
MacriJNKasturiRVKrantzDACookEJMooreNDYoungJAMaternal serum Down syndrome screening: Free β-protein is a more effective marker than human chorionic gonadotropin. Am J Obstet Gynecol1990; 163: 1248–53.
4.
SpencerK. Evaluation of an assay of the free β-subunit of choriogonadotropin and its potential value in screening for Down's syndrome. Clin Chem1991; 37: 809–14.
5.
SpencerKMacriJN. Early detection of Down's syndrome using free beta human choriogonadotrophin. Ann Clin Biochem1992; 29: 349–50.
6.
KnightGJColeLA. Measurement of choriogonadotropin free β-subunit: An alternative to choriogonadotrophin in screening for fetal Down's syndrome?Clin Chem1991; 37: 779–82.
