Doctor insights on:
Pregnancy Test Blood
Timing: It is possible that the urine pregnancy test detected HCG that was in the urine even as a pregnancy was failing (impending miscarriage) but by the time a blood test was done, the miscarriage had already occurred and the levels of the HCG pregnancy hormone were cleared. Alternatively, it could have just been a false (+) urine pregnancy test. ...Read more
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
Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?
Yes: Yes is correct! the blood test will turn positive at least several days earlier. ...Read more
No: The term decidual bleeding is a very imprecise term to describe first-trimester bleeding due to shedding endometrial fragments. Like it's "cousin" implantation bleeding, these terms are very loosely defined and don't really mean much that is useful. If you are pregnant a test will be positive, regardless. ...Read moreSee 1 more doctor answer
Need to re do test: Blood test is generally more sensitive and reliable than a urine test for pregnancy. You may wish to repeat the urine test as you can do that home. Use first morning urine and follow the instructions for the test carefully. Only do the home test if you are 4-5 days past the expected onset of your period. ...Read more
Threatened AB: It may be normal. Usually bleeding or cramping early in pregnancy can be concerning and may signal an abnormal pregnancy with an upcoming miscarriage. However, this isn't known yet so your OB will check hormone levels and decide if an ultrasound is helpful. Good luck to your early pregnancy. ...Read more
I had a positive pregnancy test and a positive blood pregnancy then levels declined quickly. Then positive home test. Negative blood. Any suggestions?
See below: Return to your doctor for additional testing, if needed. ...Read more
About 8 days after: Blood HCG tests detect levels very soon after embryo implantation starts. The embryo usually start implanting at about 7 days after conception. So a day later blood HCG levels will start to go up. Urine tests usually turn positive at 10 days after conception. They are slightly less sensitive than blood tests. ...Read more
Home pregnancy test was positive but blood hCG came back negative. Ob perform a blood test again. Hcg 750 progesterone 21. Why first hCG was negative?
Lab error: Presuming the first blood pregnancy test was close to the second, one of them had to be a lab error, probably the first one that was negative. If there is any question about the health of the pregnancy, your doctor can follow the bhcg level to see if it is rising appropriately and obtain an ultrasound when the level is high enough.For more info www.Askyourgynecologist.Org. ...Read more
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