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Doctor insights on: Lab Pregnancy Test

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Dr. Marvin Ott
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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Clearblue.Easy.Ovulation test show pregnancy?

Clearblue.Easy.Ovulation test show pregnancy?

No: Home pregnancy tests are used to detect pregnancy and ovulation tests are used to detect ovulation. Take care. ...Read more

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Preg test positive but blood test negative missed period?

Preg test positive but blood test negative missed period?

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

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Positive blood serum pregnancy test June 27. Urine tests still neg. should I be concerned?

Positive blood serum pregnancy test June 27.  Urine tests still neg.  should I be concerned?

June 27? today 6/22: I think you meant 6/17? Serum pregnancy test can detect pregnancy quite a bit earlier than the urine test can... if you tested positive on 6/17 with serum, the urine test should be coming soon.. any question/concern, consult doc. Good luck. ...Read more

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Hyperthyroidism and positive pregnancy tests?

Hyperthyroidism and positive pregnancy tests?

See your doctor: Thyroid medication often requires dose adjustments in the first part of pregnancy. You should continue on your regular medication for now, but call and make an appointment to be seen soon. ...Read more

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Invalid pregnancy test result. How come?

Invalid pregnancy test result. How come?

Invalid preg test?: Urine pregnancy tests can be "too early" to be valid. You need to be at least 5 days past your expected period. Urine also needs to be 1st of the morning (concentrated) to be valid. ...Read more

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I took 7 home pregnancy test all positive but doctor test say negative and blood test was negative why?

I took 7 home pregnancy test all positive but doctor test say negative and blood test was negative why?

Please clarify: Perhaps the reason can be known when you tell us honestly why you kept testing at home even though the test told you a positive answer. Something must have clued you into the fact something was not normal. You tell us. ...Read more

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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?

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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Difference between home pregnancy test and pregnancy blood test?

Difference between home pregnancy test and pregnancy blood test?

Blood more sensitive: A blood test is more sensitive and can pick up a pregnancy earlier. A blood test can also quantify the amount of bhcg the hormone released when a woman is pregnant. Both tests are positive when bhcg is present. ...Read more

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Hcg 50 positive blood test two negative urine please help.

Hcg 50 positive blood test two negative urine please help.

Recheck blood: You need to have the blood levels checked again. You expect the level to about double in 2 days with a normal pregnancy. ...Read more

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Is a four week negative HIV antibody test / negative PCR test reliable?

Is a four week negative HIV antibody test / negative PCR test reliable?

HIV diagnosis: Antibody titers have been reported to be delayed as long as six months, but this is very unusual. A negative pcr for viral RNA is virtually determinative of the absence of infection. ...Read more

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Are STD urine test accurate?

Are STD urine test accurate?

Yes, reliable ...: Yes, it's reliable but less than testing the specimens from vaginal fluid / cervical mucus/fluid, especially for trichomonas. Besides, some 75% & 50% of chlamydia-infected women & men have no symptom respectively. So, all women ...Read more

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Positive pregnancy test and menstrual cramps normal?

Positive pregnancy test and menstrual cramps normal?

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

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Can home pregnancy test detect abdominal pregnancy?

Yes: Home pregnancy tests can detect whether you are pregnant or not. They do not tell you the location of the pregnancy. if you are pregnant, it will test positive. An ultrasound can help identify if you have an abnormal pregnancy. Best Wishes Dr M ...Read more

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Dr. Shari Jackson
4 doctors shared insights

Laboratory (Definition)

Is facility that provides controlled conditions in which scientific research, experiments & measurements are performed. An example is medical (clinical) lab where tests are done on clinical specimens in order to get info. About the health of a patient in terms ...Read more


Dr. Stephen Sudler
482 doctors shared insights

Pregnancy Test (Definition)

A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as ...Read more