False negative pregnancy test washes away all your hopes when they must still survive. When you are pregnant but get a negative pregnancy test it is not only sad but dangerous. You can continue with habits that you must not. Other possible case is when an unwanted pregnancy goes undetected. This is also harmful as the later stages are more critical for abortion.
A false negative pregnancy test can be because you took the test too early or used a very less sensitive pregnancy test. In either case you have got a false pregnancy test and are not aware about it. Therefore, relying on a single home pregnancy test is a mistake. You need to at least take two tests with some time lag to confirm your results.
What to do after a false negative pregnancy test?
First of all it is important that you come to know that you’ve got a false negative pregnancy test. Only after that it will be possible that you take some step. How to find a false negative pregnancy test? You can find out that you’ve had a false negative pregnancy test when you repeat the test. When you’ll see pregnancy signs, it will tell you that something is wrong.
After taking a pregnancy test and getting negative result, the first thing you expect is period. If your period doesn’t return then you’ll know that the test was not right.
After getting a false negative pregnancy test during infertility treatment don’t immediately jump to conclusions. The egg embedment can take time depending upon the stage when the zygote went inside your uterus.
Don’t take any extreme steps like reverting back to smoking or drinking when you get a negative pregnancy test. A simple mistake like taking the test at wrong time or unknowingly using an expired pregnancy test can give false negative pregnancy test. The occurrence of false negative pregnancy test is very common.
False positive pregnancy test is less common and happens in two or more cases. After IVF you get a false positive pregnancy test because of the fertility drugs. Any cysts can also mimic hCG production and give a false positive pregnancy test.
Can you get false negative pregnancy test after missed period?
Pregnancy test can take as long as there weeks to show positive results. Home pregnancy tests have a life span and they expire after that. During their life they can undergo unexpected damage and give false results or have low sensitivity.
If your body takes longer to produce hCG and you had late implantation then you will get a false negative pregnancy test after missed period. This is because it takes at least 5 days after implantation for reaching the level of hCG that matches the sensitivity of pregnancy test.
If implantation was near the period date then there will not be enough time for hCG production. Pregnancy test will not be able to detect pregnancy. The body doubles hCG after every 48-72 hours or two days. Some women may take even longer than this. There is nothing to worry about unless you have symptoms like intensifying cramps.
The burrowing of blastocyst in the endometrial lining causes spotting called implantation bleeding. Symptoms like cramping, implantation dip, dizziness and breast changes happen before missed period during pregnancy. If they don’t happen then you may not be pregnant at all.
How common is a false negative pregnancy test during breastfeeding?
Unfortunately but false negative home pregnancy tests are very common. Some brands might be more efficient in being able to prevent such cases. EPT, Clearblue and First Response Pregnancy Test have higher rate of accurate pregnancy detection.
Despite the high levels of prolactin it is possible that you ovulate and have period during breastfeeding. You can get pregnant during breastfeeding stage.
False negative pregnancy test is more common at this time because there are conflicting hormones. But there is no evidence for them interfering with pregnancy test.
Can you get false negative pregnancy test on day of missed period?
Missed period day is too early to expect guaranteed accurate results. False negative pregnancy test on day of missed period is nothing to even bother about.
Missed period is at most a week after implantation and can have low levels of hCG. People wait for weeks for taking a pregnancy test or period to return. False negative pregnancy test on day of missed period is most probable if you do not use early morning urine.
During early pregnancy the urine has very little concentration of hCG. The blood hCG levels are higher than urine. A pregnancy blood test can give accurate results at early stage.
When you don’t get up to go to the loo at night then your urine concentration rises. Now hCG is more easily accessible for pregnancy test strip. But if you don’t use early morning urine or don’t follow the instructions then you will not get a positive pregnancy test even if pregnant.
What are causes of false negative pregnancy test?
There are many causes of false negative pregnancy test. It is not necessary that false negative pregnancy test only means that you took test early. It could be that your pregnancy is not normal.
Tubal pregnancy also gives false negative pregnancy because the hCG levels don’t rise. When the implantation doesn’t occur in the uterus the condition is Ectopic pregnancy or tubal pregnancy. Here is a list of causes of false negative pregnancy test:
- Every pregnancy test has different and specific instructions. There are no general rules for taking pregnancy test. Not following instructions of pregnancy test can give false negative pregnancy test.
- Using dilute urine or having low levels of hCG gives a false negative pregnancy test. The pregnancy tests are qualitative and can detect a specific and above that concentration of hCG.
- Using an expired or defective pregnancy test puts you at a higher risk of getting wrong HPT results.
- Being on certain medications such as anti-inflammatory drugs can give false results.
- Taking the pregnancy test before implantation or too early reduces the chances of getting a positive pregnancy test.
- Certain conditions like Molar pregnancy where the embryo doesn’t form don’t produce enough hCG. They can give false negative pregnancy test.