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Doctor insights on: Are Blood Tests For Pregnancy Always Accurate

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Are blood tests for pregnancy always accurate?

Are blood tests for pregnancy always accurate?

Depends on gest age: The blood pregnancy test or beta HCG is very sensitive and specific. The hormone is produced only by a developing human pregnancy. However, one result is only a snapshot. A very early pregnancy could be normal, not normal or possibly an ectopic pregnancy. Sometimes it is necessary to check the levels over several days to discern how the pregnancy is going. ...Read more

Dr. Lynne Weixel
4 doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


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How accurate are blood tests for hypothyroidism in pregnancy?

How accurate are blood tests for hypothyroidism in pregnancy?

T4 higher: Tsh is usually unaffected, however, serum levels of T4 are higher during pregnancy than during non-pregnant state. In combination, these tests are accurate during pregnancy. ...Read more

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How accurate are HCG pregnancy hormone blood tests at what would be 15 weeks?

How accurate are HCG pregnancy hormone  blood tests at what would be 15 weeks?

Accuracy in what way: At 15 weeks any pregnancy test would show positive if you were pregnant. The quantitative number, however, would not be very precise about just how pregnant you are. An ultrasound would be better for dating. ...Read more

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Are blood tests for pregnancy done at the gyno?

Serum HCG's can: Often be drawn at the doctor's clinic or at a lab. ...Read more

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Do regular blood tests show pregnancy?

Do regular blood tests show pregnancy?

No: 'routine' blood tests as from a scheduled physical examination test for basic electrolyte levels (sodium, potassium, calcium, chlorides, etc), blood counts (how many red and white cells, level of hemoglobin, etc) and perhaps certain enzyme levels. They do not routinely include the hormone indicative of pregnancy, human Chorionic Gonadotropin (hcg). Tests for this must be ordered separately. ...Read more

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Which blood tests are necessary in pregnancy?

Which blood tests are necessary in pregnancy?

OB labs: Depends on the doc. I get blood type and antibody screen. Complete blood count. Hepb, c. Hiv. Rubella. Syphilis. Cystic fibrosis or sickle cell screen. Glucose tolerance test. Additionally, i get a urine culture, gonorrhea/chlamydia test, pap smear (if due)... These aren't blood tests but part of most OB lab panels. ...Read more

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What blood tests should I have during pregnancy?

What blood tests should I have during pregnancy?

Depends on risks.: First trimester blood work includes: blood count, blood type, exposure to hiv, syphilis, hepatitis b, immunity to rubella, pap smear and cultures for gc & chlamydia in the second trimester, screening for anemia and gestational diabetes. In the third trimester, a second screen for hiv, syphilis and a vaginal culture for group b strep. Additional testing may be offered depending on risk factors. ...Read more

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Why do I keep getting negative urine and blood tests when I clearly look 5 months pregnant and have all pregnancy symptoms?

Why do I keep getting negative urine and blood tests when I clearly look 5 months pregnant and have all pregnancy symptoms?

Not pregnant: If both blood and urine tests are negative for HCG, you are not pregnant. You may have just gained weight. If you must, you may ask your doctor for an ultrasound examination which would clearly reveal a fetus it there is one. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine. ...Read more

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Im gonna rephrase my last question. Is it possible to have multiple negative pregnancy tests, including blood tests, throughout the whole pregnancy?

Unlikely: Specially, blood test to detect beta-hcg to confirm viable pregnancy are very accurate. Plus ultrasound abdomen will give additional information which will be highly valuable in regards to pregnancy outcomes. ...Read more

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Which sti's does the first blood tests in pregnancy look for?

Which sti's does the first blood tests in pregnancy look for?

Syphilis and HIV: Also hepatitis b; cervical cultures are also done for gonorrhea and chlamydia (not blood test) with pap test (for human papilloma virus). ...Read more

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I had a stubal litigation six years ago, did a few home pregnancy tests, 3 came out positive, when for blood tests showed negativ?

I had a stubal litigation six years ago, did a few home pregnancy tests, 3 came out positive, when for blood tests showed negativ?

False positive: Both urine and blood tests for pregnancy are accurate, but home tests are more subject to user error and quality of test. ...Read more

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Good day. Just want get some advice on my pregnancy. Did some HCG blood tests. 19 May 2015 - <0.5 1 June 2015 - 417 7 June 2015 - 5358 Normal?

Good day. Just want get some advice on my pregnancy. Did some HCG blood tests.
19 May 2015 - <0.5
1 June 2015 - 417
7 June 2015 - 5358
Normal?

Yes: HCG levels vary widely in normal pregnancies. You may visit this site for more info. http://www.pregnancy-baby-care.com/articles/168/during-pregnancy/hcg-levels-during-pregnancy.html ...Read more

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Dr. Le Wang Dr. Wang
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Are autoimmune blood tests & antiphosopolipid usually recommended for later pregnancy loss & not for 2 early mc (6 weeks & 8 weeks)? Should I get em

Dr. Le Wang Dr. Wang
3 doctors agreed:
Are autoimmune blood tests & antiphosopolipid usually recommended for later pregnancy loss & not for 2 early mc (6 weeks & 8 weeks)? Should I get em

APS and pregnancy: Antiphospholipid syndrome (APS) is associated with pregnancy loss in both early and late pregnancy as defined by 1) > 3 unexplained, consecutive pregnancy losses 1 unexplained fetal death > 10 weeks of pregnancy. In each case, the pregnancy loss related to the anatomic, hormonal or chromosomal abnormalities should be excluded first before the test is sent. ...Read more

Blood Tests (Definition)

Blood is usually drawn from your ...Read more