Doctor insights on:
Are There False Positives In Pregnancy Tests
See below: The answer is yes. Any test in medicine can have false positive and false negative tests. If your test is positve wait a couple of days and retest two postive tests would make it very unlikely to be wrong. ...Read more
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
Controversial.: Many patients report problems with how they interpret the blue lines. So if you study how to interpret the blue lines you might get less 'false positives'. Generally speaking pregnancy tests are really good in having very few false positives. If it is an issue, get pink dye ones. ...Read more
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
HIV testing: This depends upon the test employed. They are generally both sensitive and specific but false positive results do occur. This question can be overcome with further testing, the most specific being PCR for HIV RNA. You should be seen by an expert in the management of HIV disease. ...Read more
Depends on gest age: The blood pregnancy test or beta HCG is very sensitive and specific. The hormone is produced only by a developing human pregnancy. However, one result is only a snapshot. A very early pregnancy could be normal, not normal or possibly an ectopic pregnancy. Sometimes it is necessary to check the levels over several days to discern how the pregnancy is going. ...Read more
Pregnancy Tests: Pregnancy tests are designed to look for the presence of beta-hcg which is a hormone produced by a conceptus and acts to maintain a pregnancy. The level rises very quickly after conception and can be detected as early as 1 week after conception and almost always by 2 weeks after conception. False negatives occur during this 2 week period. Breastfeeding does not impact this hormone. ...Read more
How reliable are blood tests that look for monoclonal gammopathy in elevated ImM levels ? Are false negatives possible?
FDA approval: Please look for FDA approval statement on the kit. If the kit is FDA approved, it would be accurate, Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about 2-3 weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine. ...Read more
Are hiv rna tests reliable? Is it known to give false positives? Ive been testing negative but afraid to take any test that gives lots a falsepositive
RNA PCR Rare false+: Both Qualitative and Quantitative HIV PCR testing have very low rates of false positivity! So if HIV 1 Real time PCR quantitation is Positive for 30 or more copies /ml of blood It means you have active HIV Virus in your bloodstream even if it is at low titer! HIV Non Progressors have Positive ELISA/Western Blot Testing but negative HIV Viral load ! So HIV does not replicate in their bloodstream ...Read more
Home drug test: NoGet a more detailed answer ›
- Talk to a doctor live online for free
- 3 false positive pregnancy tests
- Causes false positive pregnancy tests
- Percentage of false positive pregnancy tests
- Ask a doctor a question free online
- What can cause false positive pregnancy tests?
- Can microgestin cause false positive pregnancy tests?
- Ovarian cysts and false positive pregnancy tests
- What causes false positives on pregnancy tests?
- Talk to a obstetrician and gynecologist online