U.S. doctors online nowAsk doctors free
Valley Stream, NY
A 18-year-old male asked:

Is pregnancy test is 100% guarantee?

4 doctor answers6 doctors weighed in
Dr. Steven Warren
Family Medicine 10 years experience
No: no test is 100% but the home pregnancy tests are 99 plus5 accurate if done correctly
Dr. Claude Parola
Internal Medicine 41 years experience
No: A pregnancy test can be falsely positive or falsely negative if the test is not preformed properly or be simply negative if preformed before hcg is high enough to be detected
Dr. Jeff Livingston
Obstetrics and Gynecology 23 years experience
Very accurate: Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.
Dr. Robert Grindstaff
Addiction Medicine 39 years experience
Pregnancy test: Usually a positive test is real unless there is a molar pregnancy ( hydadiform mole) a negative urine test may be a false negative and may be confirmed with a serum test

Similar questions

A 48-year-old member asked:

Does a faint positive on a pregnancy test always guarantee pregnancy?

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 26 years experience
A positive is: usually accurate - unless you let it sit too long before you read it and the material becomes concentrated or an evaporation line formed. You can always repeat to make sure.
A 42-year-old member asked:

Can a pregnancy test be 100% trusted?

1 doctor answer2 doctors weighed in
Dr. Douglas Miller
Pathology 42 years experience
Close but no: No test is 100% reliable; there are false positives and false negatives. For home pregnancy tests these are rare, but not zero. Furthermore the accuracy depends on when the test is done and if it is done according to the directions.
A 18-year-old female asked:

When is a home pregnancy test 100% accurate?

1 doctor answer1 doctor weighed in
Dr. Joseph Woods
Pathology 29 years experience
About 6-12 days.: These are usually best when done at or after 6-12 days after fertilization. If done earlier, false negatives may occur, so wait about 2 weeks. The rosette inhibition assay for early pregnancy factor (epf) can be done 48 hours after fertilization, but is costly and long. U/s also done. See your doctor fore more info.
A 44-year-old member asked:

When can I do home pregnancy test and bee 100% sure?

1 doctor answer1 doctor weighed in
Dr. Alan Patterson
Obstetrics and Gynecology 43 years experience
At time of missed: Period it will be + and many of the newer ones are + before the missed period.
United Kingdom
A 16-year-old male asked:

If you did a pregnancy test at 8 weeks would that be 100% reliable?

1 doctor answer2 doctors weighed in
Dr. Asha Kamnani
Obstetrics and Gynecology 44 years experience
Yes: A Pregnancy test at 8 week should be 100% reliable

Related questions

A 20-year-old female asked:
How sure is home test pregnancy?
1 doctor answer1 doctor weighed in
A 38-year-old member asked:
What are the tests for false pregnancy?
1 doctor answer2 doctors weighed in
A 38-year-old female asked:
Can you test positive pregnancy 14 dpo?
1 doctor answer1 doctor weighed in
A 35-year-old female asked:
I have pregnancy signs but all my tests are negative?
1 doctor answer1 doctor weighed in
A member asked:
What tests and screenings will I have to do in pregnancy?
2 doctor answers3 doctors weighed in
Last updated Jan 30, 2015
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.