... . During normal pregnancy, HCG can be detected in urine as early as 7 days following conception, doubling every 1.3 to ... soon after conception and its subsequent increase in concentration during early gestational growth make it an ideal marker for the ... early detection of pregnancySpecification: 1) HCG10A, HCG11A, HCG12A, HCG20A, HCG13A, HCG ...