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Doctor insights on: Urine Pregnancy Test Vs Blood

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Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

False negative PG: A false pregnancy test is possible however, in this case you also have a negative blood pregnancy test which is far more accurate. ...Read more

Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


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What pregnacy test is better blood or urine?

What pregnacy test is better blood or urine?

Urine cheaper : Urine test is cheaper, easy and late compared to blood test. Blood test is early, accurate but usually can be done in a lab and may need doctor's order. ...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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Is pregnancy test from blood accurate?

Is pregnancy test from blood accurate?

Pregnancy Testing: Yes, if performed after an appropriate length of time after possible conception. ...Read more

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Endometrium present 18 days on period negative pregnancy test results via blood and urine tests. Possible causes?

Endometrium present 18 days on period negative pregnancy test results via blood and urine tests. Possible causes?

Unclear meaning: Not sure what you mean by "endometrium present." This needs clarification. If you mean that you have been bleeding for 18 days then you will need to see an Obgyn for evaluation, STD testing, possible a sonogram and you can discuss options for cycle control. ...Read more

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Docs, could a blood test or urine test detect chlamydia?

Docs, could a blood test or urine test detect chlamydia?

Testing: Chlamydia tests include a culture that may take 5 to 7 days to grow. A direct fluorescent antibody test looks for antigens. A nucleic acid hybridization test or a nucleic acid amplification test looks for chlamydia dna &enzyme –linked immunosorbent assay. Directing sampling uses fluids from cervix, urethra throat, eye (whichever area is impacted). Urine testing is also possible. ...Read more

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What causes a urine & blood pregnancy test to be inconclusive?

What causes a urine & blood pregnancy test to be inconclusive?

One possible: reason is if the woman is pregnant but the HCG level is just not quite high enough to trigger a positive result. ...Read more

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Urine & blood test positive for pregnancy. 2 weeks later urine tst negative. What can be wrong? I'm spotting a little

Urine & blood test positive for pregnancy. 2 weeks later urine tst negative. What can be wrong? I'm spotting a little

See below: If the urine test was done correctly and it was negative, the pregnancy may have been lost spontaneously. About 25% of early pregnancies are lost, mostly due to chromosomal defects in the embryo. If you have more bleeding than just spotting, this may have happened. If it is just spotting, you may wish to repeat the urine test, just in case of error in the test. ...Read more

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Can a blood pregnant test show up positive before a urine pregnant test? How early can the blood test show positive?

Can a blood pregnant test show up positive before a urine pregnant test? How early can the blood test show positive?

Yes: A serum ( blood) pregnancy test can be (+) as early as 7- 10 days post conception since it can detect very low levels of the pregnancy hormone beta hcg, the test gets more accurate as the pregnancy advances however. ...Read more

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Blood test. Pos for nitrates in urine?

Blood test. Pos for nitrates in  urine?

Not sure: Positive nitrites in the urine is indicative of a urinary tract infection. I am not sure what blood test has to do with it, though. ...Read more

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Can a normal urine test detect pregnancy ?

Can a normal urine test detect pregnancy ?

Pregnancy Testing: A normal home pregnancy or in clinic urine test can detect pregnancy. But a normal ua done for other reasons does not test for pregnancy. You need the pregnancy urine test. ...Read more

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At home UTI test positive for leukocytes but urine test at hospital negative for white and red blood cells. 24 weeks pregnant. Uti?

At home UTI test positive for leukocytes but urine test at hospital negative for white and red blood cells.  24 weeks pregnant.  Uti?

URINE ANALYSIS: The dip stick is quite non-specific for an actual infection. The microscopic eval. With a culture and symptoms check is the way to diagnose and appropriately treat a uti. ...Read more

Dr. Ronald Krauser
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


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