If you take a pregnancy test at night and it’s negative, you may still want to take another test in the morning or in a few days to help confirm that you’re not actually pregnant. There are a variety of factors that can contribute to a false negative: Taking medications.
What does it mean when one pregnancy test is positive and the other is negative?
Sometimes a woman gets a positive test followed by a negative. This sometimes happens when one test is less sensitive than another. But if a positive test is followed by several negative tests, this could mean the woman is having a chemical pregnancy.
Can you get a negative pregnancy test after a positive?
One explanation for a false negative pregnancy test is what’s called the hook effect. It’s not common but sometimes this effect leads to urine and blood tests giving the wrong result. This error might happen even after you’ve had one positive pregnancy test and test again a couple days later.
Does it really matter what time of day you take a pregnancy test?
The Best Time of Day
You’re more likely to get an accurate result if you take the test in the morning. 3 This is especially true if your period is not yet late, or if your period is only a couple days late. At-home pregnancy tests work by detecting the hormone human chorionic gonadotropin (hCG) in your urine.
Is hCG really higher in the morning?
HCG Levels in Early Pregnancy
Many companies recommend that you take your pregnancy test in the morning because first-morning urine typically contains the highest concentration of human chorionic gonadotropin (hCG), the pregnancy hormone. The good news is that hCG nearly doubles about every 2 days in early pregnancy.
What is the longest it can take for hCG to show up?
It takes about 2 weeks for your hCG levels to be high enough to be detected in your urine using a home pregnancy test.
Can I be 5 weeks pregnant and still test negative?
Even if you did miss your period but it hasn’t been at least a couple of weeks since you conceived, you could still get a “false negative.” That’s because you need a certain level of a hormone called HCG (human chorionic gonadotropin) in your urine for the test to work.
Can you be 6 weeks pregnant and test negative?
Sometimes a test can also return a false positive result, detecting pregnancy where none exists, but false negative results are much more common, with as many as 9 out of 15 women testing negative until seven or eight weeks.
How many pregnancy tests should I take if positive?
You don’t have to take another test if you get a positive result, but many women choose to repeat the test just to be sure. If you do get a positive result, book an appointment with your doctor or midwife.
How many hours does it take for hCG to build up in urine?
Follow the Pregnancy Test’s Instructions
This is to allow time for your body to build up enough hCG (human chorionic gonadotropin) to be detected in your urine. You may choose to test before the week is up, knowing that hCG nearly doubles every 48 hours. This is not harmful to anything other than your wallet.
Is second morning urine OK for pregnancy test?
For best results, take the pregnancy test in the morning. First-morning urine exhibits the highest concentration of hCG. Taking your pregnancy test sooner than eight days past ovulation might result in a false negative. Blood tests are more sensitive and can offer more information than a home urine test.
Can I save my first morning urine to test later?
If you can’t hand your urine sample in within 1 hour, you should put the container in a sealed plastic bag then store it in the fridge at around 4C. Do not keep it for longer than 24 hours. The bacteria in the urine sample can multiply if it is not kept in a fridge. If this happens, it could affect the test results.
When is urine pregnancy test positive?
When you can do a pregnancy test
Some very sensitive pregnancy tests can be used even before you miss a period, from as early as 8 days after conception. You can do a pregnancy test on a sample of urine collected at any time of the day.
What happens if you hold pregnancy test in urine too long?
You might want to take your mind off the nervous wait, but don’t wander off and forget; leaving the test ‘cooking’ for too long can give a false positive result. The reason for this is due to the urine evaporating if left for too long; it can leave a faint line which can be mistaken as a positive test.
Why is my period late but test negative?
The most common reason for a late period and a negative pregnancy test is that your period is simply delayed and you’re not pregnant. Having one or two irregular cycles a year is not unusual and does not mean there is something wrong.