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Generally from 6 Â½ -7 weeks is the time when a heartbeat can be detected and viability can be assessed. A normal heartbeat at 6-7 weeks would be 90-110 beats per minute.The presence of an embryonic heartbeat is an assuring sign of the health of the pregnancy.rogesterone. Progesterone levels also can have quite a variance at this stage of pregnancy. They can range from 9-47ng/ml in the first trimester, with an average of 12-20ng/ml in the first 5-6 weeks of pregnancy.
Implantation usually occurs 5-6 days after conception. So for a blood test I would say it would detect pregnancy around 8 days after conception.A home pregnancy test takes longer to detect HCG because they are only sensitive to a certain amount of HCG, usually 50 and higher.Your HCG doesn't reach 50 until about 13 days after conception and sometimes longer.When a doctor orders a blood pregnancy test they will order a quantitive hcg test...meaning they want to know what your HCG level is at.our HCG doesn't reach 50 until about 13 days after conception and sometimes longer. When a doctor orders a blood pregnancy test they will order a quantitive hcg test...meaning they want to know what your HCG level is at.