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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can A Blood Test For Pregnancy Be Incorrect?

hi im nicole and im 26 my question is, can a quantitive blood test be incorrect? I am currently 2 weeks late for my period. I must tell you, i have never missed or been late for a period ever before, unless pregnant! my breast are very sore.. I have had a tubal pregnancy last year that had resulted in surgery. Also have recieved false positive urine test in the past as well.
posted on Thu, 13 Mar 2014
Twitter Fri, 12 Sep 2014 Answered on
Twitter Mon, 15 Sep 2014 Last reviewed on
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General & Family Physician,  's  Response
Welcome to Health care magic.

1.An urine pregnancy test after a missed period will give accurate result which accuracy up to 97 %.
2.If you feel previously you had a false positive - you can try for blood BHCG level which will help to detect earlier with level indicating the weeks of pregnancy.
3.Or definitive diagnosis can be done with an ultrasound after 3 weeks which will give evidence of gestational sac and foetal pole.
4.If you had previous pregnancy tubal - i would suggest to get a good followup and needful investigation done as soon as you can.
5.No blood test can not be incorrect. Good luck.

Hope it helps you. Wish you a good health.
Anything to ask ? do not hesitate. Thank you.
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Can A Blood Test For Pregnancy Be Incorrect?

Welcome to Health care magic. 1.An urine pregnancy test after a missed period will give accurate result which accuracy up to 97 %. 2.If you feel previously you had a false positive - you can try for blood BHCG level which will help to detect earlier with level indicating the weeks of pregnancy. 3.Or definitive diagnosis can be done with an ultrasound after 3 weeks which will give evidence of gestational sac and foetal pole. 4.If you had previous pregnancy tubal - i would suggest to get a good followup and needful investigation done as soon as you can. 5.No blood test can not be incorrect. Good luck. Hope it helps you. Wish you a good health. Anything to ask ? do not hesitate. Thank you.