Monday, May 28, 2018

False Negative Pregnancy Test | Pregnancy Test | Elawoman



False Negative Pregnancy Test

A False negative pregnancy test is a hCG based pregnancy test which appears negative when, truth be told, you are pregnant. You can in any case be pregnant yet have a negative pregnancy test. 

False Negative/Positive vs. True Negative/Positive 
  • A false negative hCG pregnancy test is a negative pregnancy test when in actuality you are pregnant and it ought to be positive. 
  • A false positive hCG pregnancy test is a positive pregnancy test however you are not pregnant and it ought to be negative. 
  • A true negative pregnancy test is a negative pregnancy test and you are not pregnant 
  • A true positive pregnancy test is a positive pregnancy test and you are really pregnant. 

Home Pregnancy Tests 

Human Chorionic Gonadotropin (hCG) pregnancy tests or home pregnancy tests decide Pregnancy through the location of the hormone Human Chorionic Gonadotropin (hCG) in a lady's urine. Doctors prescribe that you wait until the point when you have missed a period to take a home pregnancy test. On the off chance that you can't wait that long to discover and you know the day you may have imagined, then the most punctual you can step through an examination would be 14 days from conceivable origination. Home tests are typically 97% precise when all directions are followed effectively and the outcomes are perused on time. A few kits accompany two tests so in the event that you committed an error, you may take the home pregnancy test once more, ideally at a later date and with the main morning's urine. 


What Causes A False Negative hCG Pregnancy Test 

There are a few reasons you may get a Negative Pregnancy Test No Periods when you are as of now pregnant: 

1. You Tested Too Early And Too Close To Implantation. 

In the event that you take a home pregnancy test too early, you may get a false negative outcome. This is the significant purpose behind a Negative Pregnancy Test No Periods. You require a sufficiently high blood and urine hCG pregnancy hormone level to get a positive pregnancy test. On the off chance that you get negative outcomes yet regardless you figure you could be pregnant, wait a couple of days and attempt once more. Test early in the day. 


Quantitative blood tests and the most sensitive urine tests as a rule identify hCG soon after implantation, which can happen somewhere in the range of 6 to 12 days after ovulation. Beta hCG levels rise exponentially in the initial two months of pregnancy so the prior the test is played out, the higher the shot of a false negative outcome. Less sensitive urine tests and qualitative blood tests may not identify pregnancy until three or four days after implantation. Monthly cycle happens by and large 14 days after ovulation, so the probability of a false negative is low once a menstrual period is late. 

2. The Test Strips Had Too Low Sensitivity

Urine Pregnancy Test strips differ in their sensitivity. That implies they become positive and they can recognize the hormone Human Chorionic Gonadotropin (hCG) in your urine at various levels. Test strips and midstream tests and digital tests have distinctive sensitivities which implies they demonstrate a positive at various measures of hCG in your urine. Some HPTs are exceptionally "sensitive" to hCG and identify a generally low measure of hCG, similar to 20 mIU/ml. Once the urine demonstrates 20 mIU/ml or higher, the test becomes positive. Other HPTs have a lower sensitivity to hCG and distinguish hCG just at considerably higher measures of hCG, 50 mIU/ml or 100 mIU/ml. For instance, if your urine has 40 mIU/ml hCGbut you utilize a strip that recognizes just 50 mIU/ml hCG then your test will be negative and does not become positive until the point when you achieve a larger amount. 

3. The Urine Is Too Diluted. 

In the event that your urine is diluted, say for instance in the event that you drank a great deal of fluid, then the convergence of hCG in your urine becomes less, and the test may be negative. That is the reason most makers prescribe that you test with more focused, first morning urine. 

It is conceivable that despite the fact that your ovum may be treated, which means you may be pregnant, your body has not begun discharging enough Human Chorionic Gonadotropin (hCG) for the test to quantify. Your body needs time for the hormone to rise to a sufficiently high level to be identified in a test. 


4. You Are Overweight And The Hcg Is Too Low Yet. 

Ladies who are overweight and have a high BMI weight list have lower hCG pregnancy hormone levels. 

5. It May Be The Hook Effect. 

A known disappointment mode for pregnancy identification by urine hCG pregnancy tests happens when hCG is in substantial abundance and no weakening advance is performed to wash the overabundance hCG variation away. The overabundance hCG shape can all the while immerse the settled, strong stage immunizer and the labeled, dissolvable counter acting agent, counteracting sandwich development. This "hook effect wonder" brings about nonattendance of a flag, and a Causes Of False Negative Pregnancy Test, The dumbfounding lessening in the bend plotting an expanded flag with expanded centralization of antigen gives the presence of a hook, henceforth the name. In urine hCG tests, the hook effect is for the most part not saw until the point that hCG fixations achieve 1,000,000 mIU/mL, as is seen in gestational trophoblastic disease. Be that as it may, the "hook effect" can likewise cause false-negative outcomes in typical pregnancies when an overabundance of hCG is available. 



Remember that a negative outcome can likewise imply that you truly are not pregnant. Additionally, on the off chance that you have gotten diverse answers on various pregnancy tests, it is prescribed that you complete a blood test to find an exact solution. 
  • Time 
  • Urine Sample
  • Time of Taking the Test 
  • Quality of Home Pregnancy Test Kit 
The primary thing that nearly all ladies do when they speculate that they may be pregnant is to promptly take a home pregnancy test. 

Time 

The exactness of a home pregnancy test enormously relies upon the way that you follow the producer's directions to the tee. For instance, all home pregnancy tests demonstrate the greatest time for which the urine must be kept in the sample area for a precise outcome. On the off chance that that time is surpassed or the test analyzed too early, then the outcomes will in all probability not be exact. 

Urine Sample 

It is essential that you utilize the right urine sample for the home pregnancy test to be exact. Utilize the main morning urine as a sample for home pregnancy test. On the off chance that that is unrealistic, one should ensure that lone that urine is utilized as a sample that has remained in the bladder for no less than a couple of hours. On the off chance that you have taken too numerous liquids keeping in mind the end goal to create urine, the exactness of the home pregnancy test will be hit as too much liquid will weaken the urine and location of human chorionic gonadotropin or hCG will become considerably more troublesome. 

Time of Taking the Test 

Albeit most home pregnancy tests assert that they can precisely identify pregnancy even on the main day that you have missed your period, it is wiser to wait for no less than 10 days before you step through the examination. This is because in its initial stage the body creates low levels of hCG which may go undetected. hCG is just discharged by the body once implantation has happened. And on the main day of your missed period the body may deliver a low quantity of hCG. 

Quality of Home Pregnancy Test Kit 

The precision of a pregnancy test taken at home enormously relies upon the quality of the pregnancy test kit that you utilize. The exactness of pregnancy test kits acquired from a presumed brand will dependably be higher. Albeit most pregnancy test kits are accessible in a similar value extend, it is constantly advisable to go for an entrenched brand. 

Whether a pregnancy test kit is precise or not is strange, particularly in the event that you don't know how to utilize it and care less about the guidelines given on the manual. For precise outcomes, begin via preparing yourself well on the best way to utilize a pregnancy test kit.



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