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-   -   Pregnancy test accurancy??? (https://www.englishforum.ch/family-matters-health/119152-pregnancy-test-accurancy.html)

summerrain 13.07.2011 10:46

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by ramona (Post 1262645)
hi, just read that my blood test might have been done too early. the HCG is different on every women and might not raise as quick as on others. 14 days after conception the blood test is relayable. i done mine after 11 days. might still be lucky :-D as the early tests are more sensitive to HCG than the blood and 2 positive tests make it unbelevable for me to be wrong.....! will need to be patient and not giving up hope.

A quantitative blood test, usually called the beta human chorionic gonadotropin (hCG) test, measures the exact units of hCG in the blood. That means it will detect even the most minimal level. According to my gynae, it is accurate from 7 days of conception. So, it is already accurate from the time you've missed your first period. Much more accurate than those pee sticks as far as I've been told. The mind boggles :dunno:

OP - bad luck. Really sorry to hear that. Have fun stepping it up :D

stephanienie 13.07.2011 10:48

Re: Pregnancy test accurancy???
 
I was obsessing with getting pregnant for atleast 3 mos since arriving here and it really stressed me out. I got really moody at times and the frustration and pressure was too much. And then i gave up and blamed the depo that expired last year.

Maybe you should stop making it a "project". Stop talking, reading about it. Get some more tests but keep it hidden.

Well, unless your in your 40s and feel like you´re running out of time.

To be honest, i dont believe the blood test either. If i got 2 positives, im pregnant, thats it. Better check AFTER you miss your period so there would be no more doubts. If it was a chemical pregnancy, the lines would be lighter and lighter each time, not necessarily a negative.

Helm 13.07.2011 10:48

Re: Pregnancy test accurancy???
 
Well then, good luck again :) hope you have good news after all!

summerrain 13.07.2011 10:50

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by stephanienie (Post 1262662)
To be honest, i dont believe the blood test either. If i got 2 positives, im pregnant, thats it. Better check AFTER you miss your period so there would be no more doubts. If it was a chemical pregnancy, the lines would be lighter and lighter each time, not necessarily a negative.

?????

I always am under the impression that the blood tests are the most accurate versus a home pregnancy test kit which isnt as sensitive and can only detect it much later.

saharanz 13.07.2011 10:53

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by ramona (Post 1262645)
hi, just read that my blood test might have been done too early. the HCG is different on every women and might not raise as quick as on others. 14 days after conception the blood test is relayable. i done mine after 11 days. might still be lucky :-D as the early tests are more sensitive to HCG than the blood and 2 positive tests make it unbelevable for me to be wrong.....! will need to be patient and not giving up hope.


If you reallly can't wait and want to be 100% sure, it's been a few days since you got the last positive with the cheap test so, go and get another of the exact same test. That way you know there are no issues with different sensitivity. If you really are positive, your hormones would have more than doubled since last time so the line would be darker. The original tests most likely weren't 'false positives'. There probably was (hopefully IS) HCG there and it was enough for them to show positive result.

If it turns out you're not pregnant and it was a chemical pregnancy, the good news is, there is heaps and heaps of anecdotal evidence (just look on google) that a normal pregnancy often follows the next month. It really is very common (up to 50% of first pregnancies), just most woman never know about it. It's only with more sensitive pregnancy tests and testing before your period date that it is becoming more common.
Pretty reliable link

SwissAstrid 13.07.2011 10:53

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by ramona (Post 1262656)
No i didnt ask. i actually might phone them again

Ask them which type of test they did (see bottom of this article)

Can Blood Tests For Pregnancy Be Wrong?

As a general rule, blood tests for pregnancy are more reliable than urine or home pregnancy tests. But they can be wrong. That means, they can show false negative or false positive results in some women. To understand why this can happen, let us understand what blood pregnancy tests are, how they work and what do their results mean.

Blood Pregnancy Tests
A pregnancy blood test or a pregnancy serum test is a test that measures the exact amount of the pregnancy hormone, human chorionic gonadotropin (hCG), in the bloodstream.

Human chorionic gonadotropin (hCG) is a hormone that is produced by the placenta of a pregnant woman. It is detectable in the blood and urine within 10 days of fertilization. There are two types of blood pregnancy tests, namely, quantitative blood test which measures the exact amount of hCG in the blood and qualitative hCG blood test which gives a simple yes or no answer to whether you are pregnant or not.

Blood tests can detect a pregnancy earlier than a home pregnancy test (about 7-12 days from possible conception) and can also measure the concentration of hCG hormone in your blood (this is useful information for your healthcare provider in tracking certain problems in pregnancy). If you suspect any symptoms of pregnancy like delayed menstrual period, breast tenderness, pelvic pain, irregular spotting or vomiting. You must get a pregnancy blood test done to confirm or rule out pregnancy.

What do the pregnancy blood test results mean?
A healthy pregnancy is expected to show a normal pattern of HCG levels over time. In a pregnant woman the level of human chorionic gonadotropin (hCG) increases throughout the first trimester, then gradually decreases over time. In the first trimester, a woman may have this test done repeatedly to see if the level rises normally. If it doesn’t, the pregnancy is often considered in trouble. After childbirth, miscarriage, or abortion, the level should quickly decrease to zero.

Wrong results with blood pregnancy tests
The test may fail to detect human chorionic gonadotropin (hCG) even when a woman is pregnant if the test is done too early. It takes at least 7 days after fertilization for the test to become positive. In most cases, by the time a woman has missed her period, the test will be positive if she is pregnant.

Greater than normal levels of human chorionic gonadotropin (hCG) may indicate:

a tumor of the placenta with death of the fetus
multiple pregnancy, such as twins or triplets
ovarian cancer and other types of cancer in some cases
a normal pregnancy
blood or protein in the urine, which can interfere with the result
use of medications to prevent seizures, drugs to treat Parkinson’s syndrome, or phenothiazine drugs, such as chlorpromazine, by the mother
Lower-than-normal human chorionic gonadotropin (hCG) levels may indicate:

ectopic pregnancy
a miscarriage, or abortion.
How reliable are blood pregnancy tests?
Home pregnancy tests are around 97% accurate when done correctly. However, a blood test is more accurate, but not necessarily more sensitive. The results depend a lot on the lab, methodology and technique of the blood test performed.

----------------------

A quantitative blood test, usually called a beta human chorionic gonadotropin (hCG) test, measures the exact units of human chorionic gonadotropin (hCG) in the blood. That means it will detect even the most minimal level. There is another type of blood test sometimes called a qualitative human chorionic gonadotropin (hCG) test. This is a test that simply gives a yes or no answer to whether you are pregnant.

Just like home pregnancy tests, labs vary in what is considered a positive pregnancy test. Common cutoffs for positive blood tests for pregnancy are 5, 10, and 25 units. A level under 5 is considered negative. A blood test that is only triggered at 25 units of human chorionic gonadotropin (hCG) is not any more sensitive than several of the home pregnancy tests.

stephanienie 13.07.2011 10:55

Re: Pregnancy test accurancy???
 
It is more accurate that it detects exactly how much hcg but like the OP said, it might have been just too early.

MusicChick 13.07.2011 11:06

Re: Pregnancy test accurancy???
 
On the side of the package of the tests I used, there is a very fine print stating the accuracy of the home kit. Those measuring sensitivity 25mlU/ml were positives while the one measuring sensitivity 45mlU/ml went neg despite me being knocked up a few years back. So, not all home tests are equally accurate.

While ovulation kits are handy, I think OP should have them, just as indication and info for extra special good timing, I agree with stephanienie, focusing on it makes one go nuts...High levels of cortisone are never a good thing when hormones are supposed to work for us.

Have kinky home parties, with all sorts of...fun, to make you forget your sad thoughts..

Nickers 13.07.2011 11:41

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by MusicChick (Post 1262698)

While ovulation kits are handy, I think OP should have them, just as indication and info for extra special good timing, I agree with stephanienie, focusing on it makes one go nuts...High levels of cortisone are never a good thing when hormones are supposed to work for us.

If you have been trying for a few months and are desperate to get pregnant then i think its silly not to find out what time of the month you ovulate as you may be hitting the wrong target month after month. Not every woman ovulates around the 14th day yet many assume they do - some are surprised to find out via the ovulation kits that they ovulate super early or late - so to me it makes sense to track your cycle with the sticks for 1 month just to give you an indication when is the right time to have fun!

Some people think it takes the fun out of things but believe me the fun starts to go after months and months of heart ache so why not give yourself a helping hand early

ullainga 13.07.2011 13:11

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by summerrain (Post 1262657)
According to my gynae, it is accurate from 7 days of conception. So, it is already accurate from the time you've missed your first period.

Op has not missed one yet, only due in a few days.

wattsli1 13.07.2011 13:18

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by TonyBhoy (Post 1262492)
Bad news, got the blood tests back as negative.

We must be the unluckiest wannabe parents in the world. 2 false positive tests, raging!

Well, just need to keep trying and i will stock up on tests so we can find out a bit cheaper this time, spent 31.- on 2 pee tests, 35.- on a digital and 50.- on the blood test. over 100.- just to get that bad news :(

Oh bugger, I'm really sorry for you guys :(

I know full well how gutting it is having spent 7 months to get PG each time. Every month, waiting, wondering, testing etc. .... just keep at it and it'll most likely work eventually (very scientific advice I know).

Glass of comiserating wine or two I think.

princessduck 13.07.2011 13:25

Re: Pregnancy test accurancy???
 
:(
Keep trying!

wattsli1 13.07.2011 13:25

Re: Pregnancy test accurancy???
 
OK, so, just read the whole rest of the thread now....

You know, the way I look at it is, unless you actually get your period then it's possible to be pregnant. I would say the best thing is probably just to try and forget about it all, maybe go away for the weekend or something and just do something different. Or throw yourself into a project like cleaning the kitchen or tidying your bedroom drawers - any time wasting mind numbing activity. And then before you know it it'll be a week later and if your period hasn't showed yet then do another test. You have a much better chance of getting a reliable result the longer you wait.

Take care, I still have it all crossed for you.

transatlantic 13.07.2011 13:42

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by TonyBhoy (Post 1262492)
Bad news, got the blood tests back as negative.

We must be the unluckiest wannabe parents in the world. 2 false positive tests, raging!

Well, just need to keep trying and i will stock up on tests so we can find out a bit cheaper this time, spent 31.- on 2 pee tests, 35.- on a digital and 50.- on the blood test. over 100.- just to get that bad news :(

Sorry to hear it! :( I know how disappointing that can be! Will send lots of baby thoughts your way. :msntongue: I do suggest ovulation tests just for good measure, but I also think it is key to keep it fun and not too much pressure. Don't forget how much fun trying is! :D Also, stress can make your period late, then it is just false hope. So relax (yes, I Know this is very difficult) and have fun. :D

princessduck 13.07.2011 13:47

Re: Pregnancy test accurancy???
 
Like wattsli1 said, you should take off your mind from this for a while and do something for yourself. Your wife should do something for herself also and then do something together. This can be: you going out with your friends or play tennis (just saying), your wife can go out with her friends or do something outdoor that she likes or maybe go to a spa and then you both go to the cinema, or a walk in the mountains or to a nice place where you can eat nice sweets :D.
Or you can organise some things in your house that you didn't have the time for until now ( or the mood): clothes, papers, the basement etc.
Then you try again.
Hopefully next time you will be lucky! Think positive!!

MusicChick 13.07.2011 14:00

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by Nicky (Post 1262737)
.. i think its silly not to find out what time of the month you ovulate..

Quote:

Originally Posted by MusicChick (Post 1262698)
..I think OP should have them..

We agree. I would use them, friends who were in similar situ always used them, but very...low key approach (kinda very back of the mind), tried not to be too clinical just yet, since as per them, there was so much pressure this..initial hurdle :o

30fr a pop for the ovul test? Yikes.

Cheers to fruitful lovemaking :)

jot 13.07.2011 14:21

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by MusicChick (Post 1262965)
30fr a pop for the ovul test? Yikes.

Basal Body Temperature tracking can also be helpful in knowing when the time is right, but you have to remember to do it e-v-e-r-y day, and normally over at least a couple of months to see a recognisable pattern... and again it's hardly the most romantic of baby making activities... :(

Nickers 13.07.2011 14:23

Re: Pregnancy test accurancy???
 
Quote:

Originally Posted by MusicChick (Post 1262965)
We agree. I would use them, friends who were in similar situ always used them, but very...low key approach (kinda very back of the mind), tried not to be too clinical just yet, since as per them, there was so much pressure this..initial hurdle :o

30fr a pop for the ovul test? Yikes.

Cheers to fruitful lovemaking :)

Yeah they're expnsive here and back home but I only ever used them for one month just so I'd know when :)

I wasn't saying we didn't agree just quoted your post to reiterate the point that they are useful even if people may think it takes the fun away but for one cycle it's not a big deal

MusicChick 13.07.2011 14:30

Re: Pregnancy test accurancy???
 
They recomend the temp method back home too, and blood screening for a couple of months with endocrinologist (to see what's up hormonally, which hormone can be missing, that could mess up the egg release, etc), since once the cycle can be early, the other month late, one needs an overview, right?

So, if one uses those instant ovul home kits, does it simply tell you at that specific point, yes/no, or does it tell you also how far from ovulation? Does one need one test? Or a couple of them in the month to see when exactly one is ready?

Yeah, not romantic. The idea of people getting at it like animals is a lot more romantic.

Guest 13.07.2011 14:37

Re: Pregnancy test accurancy???
 
What's wrong with the shag-like-rabbits approach?

:msnblush:


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