Doctor insights on:
Causes False Positive Pregnancy Tests
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 corpus luteum cysts cause false positive pregnancy tests or is only rare cysts and tumors that produce hcg?
NO to #1; YES to #2: No to question #1: a corpus luteum cyst produces mostly progesterone and would not "cause false positive pregnancy tests". Yes to question #2: there are a few rare ovarian and liver tumors which produce hcg-like molecules which can cause false positive pregnancy tests. ...Read more
It shouldn't: Although the Mirena (levonorgestrel) intrauterine device releases hormones somewhat similar to a pregnancy and may stop a patient from having menstrual periods, it doesn't produce HCG like a true pregnancy. Since the pregnancy test looks for hcg, the Mirena (levonorgestrel) device shouldn't cause a false positive. ...Read more
Plan B: No. Plan b will not cause a postive pregnancy test. If positive its because most likely you are pregnant and the Plan B did not work or you took it more than the recommended 3-5 days after an unprotected sexual encounter. See your obgyn for more testing and ultrasound. ...Read moreSee 1 more doctor answer
Hi I have had 7 positive pregnancy tests, 2 being digital, I have cysts on my ovaries, could this cause false positives?
Not likely: However, urine tests don't offer you the ability to see if your level is going up like a blood (serum) pregnancy test. Would be a good idea to call your physician and ask for a serum quantitative HCG and have him/her call in some prenatal vitamins as well until your first OB appointment. Also, follicles (egg cysts) are needed to conceive and a corpus luteum cysts is needed for progesterone. ...Read moreSee 1 more doctor answer
My wife has endometriosis and systemic lupus, we took 2 (cheap) pregnancy tests and they both turned out positive. Can lupus or endo cause a false pos?
No.: False positive urine pregnancy tests are rather rare. Some possible causes are operator error, a biochemical pregnancy, or interference with the assay from recent infertility therapy. SLE and endometriosis should not impact the specificity of a urine pregnancy test. ...Read moreSee 1 more doctor answer
A friend of mine claims Paragard IUDs can cause positive pregnancy tests, by producing the hCG hormone. This is completely false, right?
Can having a vaginal infection of some kind cause a false positive result on home pregnancy tests?
I have positive urine pregnancy tests negative blood i've taken mefenamic acid can that cause false positives ?
I have taken several pregnancy tests and they all read positive but I'm certain I'm not pregnant. Could my ulcerative colitis cause a false positive?
NO: See Ob for definitive diagnosis with u/s. Planned parenthood can help if funds are limited ...Read more
I took four pregnancy tests, all a different brand, all positive.I also have a uti. I am unable to see if I have hematuria. Could this cause false pos?
No: uti will not cause false positive. Please see ob provider for evaluation. ...Read more
Are there such things as false positive pregnancy tests because i had 10 positives all show up after the time limit?
User Error: The test should be read during the time frame specified. ...Read more
Chances of two false positive pregnancy tests. I was due sat. Sunday test=positive, monday test=positive. Is it safe to say I am pregnant?
Won't alter test: Today's home pregnancy tests are very accurate and not affected by foods, herbs, protein in urine, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (or when conception might have been) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early, but a positive is likely real. ...Read more
- Talk to a doctor online
- What causes false positive pregnancy tests?
- Can microgestin cause false positive pregnancy tests?
- What causes false positives on pregnancy tests?
- False positives in pregnancy tests
- Are there false positives in pregnancy tests?
- 3 false positive pregnancy tests
- Percentage of false positive pregnancy tests
- Can pregnancy tests give a false positive?
- What can cause false positive pregnancy tests?