A 27-year-old female asked:
Can urine pregnancy test show false negative result at 23weeks or after? can the decline in hcg levels cause negative result? i tested negative at 23 weeks after any sex for the 5th time. can i trust the result for being not pregnant?
1 doctor answer • 1 doctor weighed in
Dr. Robert Kwokanswered
Pediatrics 35 years experience
Some thoughts...: Home or clinic urine pregnancy tests are very accurate. A correctly done home urine test will give a reliable result by 3 weeks after sex (3 weeks after possible conception) or 1 week after missing a period. A woman can repeat the test if she did the first test too early, such as less than two weeks after conception. Tests stay positive in pregnancy and DO NOT turn negative until after delivery.
Created for people with ongoing healthcare needs but benefits everyone.
49 viewsAnswered >2 years ago
Related questions
A 23-year-old female asked:
I did have unprotected sex he pulled out. I am 9 days late and negative pregnancy tests. Does hcg take longer to show up in some women?
Dr. Gurmukh Singhanswered
Pathology 51 years experience
Get blood test: You should see your doctor to get a blood test that is more sensitive and would be positive if you are pregnant. You may wait 4-5 days and repeat hpt ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
2.9k viewsReviewed >2 years ago
A 20-year-old female asked:
Can hcg levels 4.2miU/ml show up 28 days after sex on blood test? Does every woman have hcg levels regardless of pregnancy or not?
Dr. Gurmukh Singhanswered
Pathology 51 years experience
Less than 5: An HCG value of less than 5 28 days after sex essentially rules out pregnancy. Normal levels in non-pregnant state are less than 5. A level of greater... Read More
Created for people with ongoing healthcare needs but benefits everyone.
2.6k viewsAnswered >2 years ago
A 31-year-old female asked:
My cycle is irregular. Would HCG levels usually be high enough to show up on an hpt by the time a pregnancy is far enough along to cause spotting?
Dr. Gurmukh Singhanswered
Pathology 51 years experience
After missed period: You should do the test 4-5 days after missed period. If your cycles are irregular then do the test about three weeks after what you think was day of f... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.5k viewsAnswered >2 years ago
A 22-year-old female asked:
I checked pregnancy using a pregnancy kit in 3 time . In 3 time it shows a faint line in T and then I checked beta HCG blood test and it shows less than 2.0 . Is it negative or positive. It's 2 weeks now?
Dr. Hiep Leanswered
Nephrology and Dialysis 44 years experience
Serum beta hCG level of less than 5 rules out pregnancy. Take care!
Created for people with ongoing healthcare needs but benefits everyone.
Reviewed Feb 25, 2023
View all answers
A 19-year-old female asked:
Last period was Aug 25th! Been 4 weeks and 2 days since last sex encounter. Did a blood hcg test yesterday and came back negative. The level was <1 so it was below 5. Is it accurate enough to rule out pregnancy?
Dr. John Berrymananswered
Obstetrics and Gynecology 56 years experience
A home pregnancy test is accurate if the reading is "below 5". The extended time before your period may be due to delayed ovulation, which post-pones... Read More
Created for people with ongoing healthcare needs but benefits everyone.
Answered Oct 19, 2022
Last updated Sep 13, 2020
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