Indications
Pregnancy,Threatened abortion,diagnosis of ectopic pregnancy, gonadal carcinoma Quantification of HCG is useful in evaluating both threatened abortion as well as ectopic pregnancy.. Normally hcg concentrations double eery 2 days if doubling requiresmore than 3 days then pregnancy is possibly abnormal.The serial assays should be performed in the same clinical laboratory. By 10 weeks gesytation hcg reaches maximum concentrations and if it still continues to rise then molar pregnancy should be suspected