Urine Pregnancy Tests
Urine-based pregnancy tests measure the presence of HCG (Human Chorionic Gonadotropin), a hormone produced by the placenta. Click here for detailed information about how HCGs indicate the likelihood of pregnancy.
Other factors that may give conflicting pregnancy test results
Diluted urine at the time of your urine pregnancy test could affect results. The more concentrated the urine, the greater the concentration of HCG (the hormone that determines the likelihood of pregnancy) and the greater the chances of an accurate pregnancy test result. Women with low levels of HCG can test positive for pregnancy when testing with their first morning urination, but have a negative pregnancy test later in the same day. This generally occurs because of higher concentrations of HCG in the morning. If a woman goes to an Obria Medical Clinic late in the day, after consuming liquids, her urine will be diluted and there may not be a high enough level of HCG to detect pregnancy. If there is a question about the test results, it is recommended to confirm the results by retesting the following day using a first morning sample.
Take your pregnancy test first thing in the morning
When pregnancy test results are questionable, we recommend you retest first thing in the morning. If this is not possible, limit liquid intake and go as long as possible without urinating before you come in to an Obria Medical Clinic for a pregnancy test. If you receive questionable pregnancy test results, it’s a good idea to wait 48 hours before retesting. The extra time allows HCG levels to escalate to a more detectable level.
Other conditions that may produce false readings
There are a number of uncommon medical conditions that can skew pregnancy test results. If you test negative after 31 days and your period does not start, Obria recommends that you return to our health clinic for another pregnancy test after your next missed period. If there is still a negative pregnancy test, we recommend you see a doctor. A doctor will be able to order a blood test that will determine if HCG is present and if there are any medical concerns. If you test positive as the result of a medical condition, the doctor will advise you on further medical care.
Our medical clinics provide women around Los Angeles and in Orange County, CA to determine if you are pregnant and provide you with the best education about your pregnancy. Contact an Obria Medical Clinic today to schedule an appointment for a low cost pregnancy test.