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Dr. Andrew Rynne
MD
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.
Mon, 15 Sep 2014
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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.