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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Determine Whether My Brother's Girlfriend Is Pregnant Or Not?

Hi there, I need to determine whether or not my brother girlfriend is pregnant with his baby. On the date of the test her HcG levels were 800 and informed him that she was three weeks. I have read up and according to some sites the HcG levels on three weeks sould be 0-50. PLEASE assist
Thu, 17 Dec 2015
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General & Family Physician 's  Response
HI,
I understand your concern.
I feel there is confusion in counting the weeks.
- HCG at 3 weeks from is 5-50 mlU/ml
- HCG at 3 weeks pregnancy ( about 5 weeks form LMP) is 18-7240mlU/ml.
How ever It's not possible to determine pregnancy duration/ father of the baby ... by HCG ,as the levels vary with pregnancy & the person.
* So to know the duration of pregnancy by USG in early months can help in calculating possible paternity vaguely( by comparing with the day of sex )
- Paternity can be confirmed only by chromosomal analysis.
Thanks.
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How To Determine Whether My Brother's Girlfriend Is Pregnant Or Not?

HI, I understand your concern. I feel there is confusion in counting the weeks. - HCG at 3 weeks from is 5-50 mlU/ml - HCG at 3 weeks pregnancy ( about 5 weeks form LMP) is 18-7240mlU/ml. How ever It s not possible to determine pregnancy duration/ father of the baby ... by HCG ,as the levels vary with pregnancy & the person. * So to know the duration of pregnancy by USG in early months can help in calculating possible paternity vaguely( by comparing with the day of sex ) - Paternity can be confirmed only by chromosomal analysis. Thanks.