CapitalChick

I have a friend who works in a lab in a hospital. When I told her I was TTC, she told me that her lab stashes these pregnancy tests that cost $100 a piece (!!), but can tell whether the egg has been fertilized within 2-3 days after fertilization. I explained to her everything I had read about how your body doesn’t produce hCG until after implantation and blah blah blah...and she insisted that her tests cannot be bought by the public, are only for laboratory use, and can tell within 72 hours of fertilization.

Now, I’ve looked around, and a few sites do concur with what she’s saying...that hCG is produced before implantation...But I still don’t know what to believe...She sent me 7 tests (ssshhhh...I know, she’s a criminal :P ), and I don’t want to waste them, so thusfar I’ve been just using them on 10 DPO and have had BFN’s every time....which is fair enough, because I’ve never been pregnant (except for that very early miscarriage).

The first detection of hCG in the blood depends on when implantation happens. Extremely sensitive tests which are not available in a regular laboratory can detect the hCG even before implantation. But with regular laboratory hCG tests, hCG is usually found in sufficient levels as early as 2-3 days after implantation.
http://babymed.com/faq/content.aspx?13508

“In order to test positive on a home pregnancy test, there must be hCG present in your blood stream. hCG production starts at an early stage of development, just a few days after conception, before implantation in the uterus, but you will not be able to read until after implantation.”
http://www.fertilinet.com/frequentlyaskedquestions.htm
“hCG is produced by the trophoblast cells of the placenta. hCG production starts at an early stage of development, just a few days after conception, before implantation in the uterus. hCG enters the maternal circulation almost immediately after implantation of the embryo (blastocyst) on about day 21 of the menstrual cycle.”
http://www.hcglab.com/hCG%20levels.htm

What do you think?

miel

seriously i don't know! there is a part of me who think it's kind of good to wait to test just in case the PG doesn't take and i will just have my Af and not know i was BFP i think i will prefer to not knowing .
but i do thing there is some super sensitive test out there!

Vickie

I've never heard of this, will have to look into it later (when I'm not at work!)

Dippy Yvanne

i cudnt see tests at value of $100 a piece being available tbh!

all doctors and hospitals round here only reccomend u test at blah time, and would be a bit pricey to fund something like this!

also im sure if $700 of tests had went missing ur friend wud b in deep doos!!!

TrixieLox

Yes, I go believe (and indeed know, as it's scientifically proven, right?) that hCG levels shoot up only a day or two after conception. This explains why so many women notice symptoms within about 2-3 days of ovulating - especially the tingling bbs and tiredness. 2 friends who are PG both said their bbs started tingling and increased in size around 16dpo, which makes sense.

However, early testing is kinda dangerous unless you're advised to do it for medical reasons (eg. if you're on medication that could damage an embryo) ... I still really think people ought to wait till their AF is late b4 testing cos there are many cases of chemical pregnancies where, in essence, you are PG for a few days but then the bean falls away and you get your AF maybe a little later than usual. if you don't test, you wouldn't know that you were kinda PG for a few days - and thus save the heart ache! But it's up to individuals what they wish to do! x

codiontour

hey its worth a try! i bought the 20 hcg's bc i was so impatient!

anita665

I don't know anything about these tests but I know there is HCG before implantation. Just not too sure how it gets into your bloodstream. The cells as they divide begin making it I think and then the yolk sack it making it. This is supposedly what causes morning sickness because even when it's implanted and the placenta is being created, most of the hormone is still from the yolk sack, until the placenta takes over fully at about 12 weeks & morning sickness tends to go.

CapitalChick

I spoke with her again yesterday, and she said that she JUST did a test on a woman who had conceived....CONCEIVED....3 days prior. They did an ultrasound and determined that the fertilized egg was in her fallopian tube still (not even implanted yet).
Now...I should say that you can use these tests with urine or blood. She says that hCG shows up a few days earlier in the blood than it does in urine. She says that the woman would've had a negative result if she had used urine, but she thinks even the urine would've shown positive in 3-4 days (that's 6-7 dpo!)....
Anyway, I'm still waiting 'til 10dpo

Phexia

I don't think it's such a good idea to use those, I wouldn't wanna get my hopes up if the implantation would then fail and AF would arrive.

Tishimouse

Yes, I believe it. I'd love to have some, but would perhaps miss the little voice that says 'well maybe test in a few days time and see' after testing with a cheapie.

With these all singing all dancing tests, the one test would say game over too early for me.