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07/29/2010 (4:55 am)

Blood preg test? Best answer on the web

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  • if u are preg and u get a neg blood readin what is the least u are probably preg for it not to show up in ur blood, maybe a week preg? cuz i missed my period im 8 days late but i could have goten preg like a week ago , so im not sure whats goin on with the blood test, my hgc levels was 12.2 not very high to be preg but on the borderline for a lready misscarriage or not even levels to show?


  • then you are not pregnant, if a blood test says no then then its no, the only way that it would be wrong is if you are a day pregnant.


  • if your blood report shows that you are not than you may be not..but you can double check buy just having a pregancy test at home... try to do a test at home, if it comes positive you can ask your doctor....


  • I believe that if you get a negative blood test you are not pregnant... But also if you had sex a week ago and now you are 8 days late.. that doesn't add up really... Maybe I don't understand your question...


  • A blood test will show if you are pregnant 7 days following conception.

    Levels of hCG in pregnancy





    Human Chorionic Ganadotropin (hCG) is a hormone that can be detected in the urine and blood of humans. This hormone increases during pregnancy so it is common to measure the rise in level using Home Pregnancy Tests ( or HPTs, which measure hCG levels in the urine) or a hCG Beta test (which measures hCG levels in the blood serum). The hCG Beta is much more sensitive then the Home Pregnancy Test and you can usually get a positive result much earlier with a blood test than with the HPTs.

    Usually the reference values for hCG Beta are as follows:



    Men: less than 5.0 mIU/ml - Normal



    Women: Non -pregnant - less than 5.0 mIU/ml - Negative/normal



    *Borderline - Between 5.0 to 25.0 mIU/ml (you could be pregnant)



    *Positive - Higher than 25.0 mIU/ml



    (*) These are values within the first week and few days after conception.

    When you are pregnant the level of hCG increases and usually doubles every two to three days. It then reaches a maximum level by the second or third month of pregnancy, followed by a decrease occurring in the third trimester.



    Here are typical hCG Beta values in pregnant women up to 22 days post-retrieval (DPR) or days post-ovulation (DPO).



    DPR or DPO Amount of hCG in mIU/ml



    10 5 - 50



    12 10 - 100



    14 20 - 200



    16 40 - 400



    18 70 - 800



    20 140 - 1600



    22 180 - 3200



    Here are the hCG Beta values given by the number of weeks after ovulation:



    after the 1st week and 2 days 5.0 to 50.0 mUI/ml



    Between 1st and 2nd week 5.0 to 500.0 mUI/ml



    Between 2nd and 3rd week 100.0 to 5,000.0 mUI/ml



    Between 3rd and 4th week 500.0 to 10,000.0 mUI/ml



    Between 4th and 5th week 1,000.0 to 50,000.0 mUI/ml



    Between 5th and 6th week 10,000.0 to 100,000.0 mUI/ml



    Between 6th and 8th week 15,000.0 to 200,000.0 mUI/ml



    Between 8th and 12th week 10,000.0 to 100,000.0 mUI/ml



    http://www.praying4ababy.com


  • They usually take two blood preg tests to be sure it is really false. I know of a woman that false one day and pregnant the next (with a tubal pregnancy).









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