Q about wondfo

[nomnom]

*** Possible early BFP implied ***

I have a large batch of wondfos because they were even cheaper that way. In the past, negative results always looked negative, no matter how long it was after taking the test that I pulled it out of the garbage (no judgement please :-P). How likely do you think it is that part of a batch would be prone to evap lines several months later?

[treble]

Jan 14, 2015 10:13:20 GMT -5 nomnom said:

*** Possible early BFP implied ***

I have a large batch of wondfos because they were even cheaper that way. In the past, negative results always looked negative, no matter how long it was after taking the test that I pulled it out of the garbage (no judgement please :-P). How likely do you think it is that part of a batch would be prone to evap lines several months later?

Are you asking because you see something on one now? Within the time frame?

[nomnom]

Yes. I admit it is not within the 10 minute time frame because I haven't been patient enough to wait around. That's why I'm wondering how evaps work and if it is possible that part of a batch would show them and part would not. I've never seen an evap line. Only a shitty faint positive that was a CP.

[3houlagirl]

I been there with the CP. Boo.

I would take another test tomorrow and set a timer so that you're sure to check it within the time frame.

[nomnom]

Sounds good 3houlagirl. I'm just being terribly impatient.

Anyone know what goes wrong after the time frame that makes the test unreliable?

[almachs0786]

I may be wrong, but I think the wondfo HPT's are considered fairly inaccurate here and are said to provide false positives more frequent than other HPT's.
I would suggest an FRER.

[gdaisy09]

Jan 14, 2015 14:08:47 GMT -5 almachs0786 said:

I may be wrong, but I think the wondfo HPT's are considered fairly inaccurate here and are said to provide false positives more frequent than other HPT's.
I would suggest an FRER.

as long as it's a pink dye test it's considered pretty accurate within the window. blue dye tests shouldn't be trusted. HPTs have strips of gold nano particles that react with HCG, i believe evap lines happen when the gold particles become visible after a previously wet test has dried. 

FRERs are mostly more expensive because the materials to build them and the "fancy" wicking portion of the test are expensive.  the basic science that makes the test work is the same as wondfo,for the most part, it just comes in a prettier package. 

edited for more detail.

[nomnom]

gdaisy09 Neat! Since you seem to have info, any idea why tests expire?

almachs0786 I've heard varying accounts of wondfos.

[gdaisy09]

Jan 14, 2015 21:16:53 GMT -5 nomnom said:

gdaisy09 Neat! Since you seem to have info, any idea why tests expire?

almachs0786 I've heard varying accounts of wondfos.

If it's nanoparticle related it may be that nanoparticles have a tendency to clump up over time, when they clump the wavelength of color they emit changes, I think when Gold nanoparticles form larger clumps they tend to turn red. It's been a while since I've thought about nano chemistry...

[almachs0786]

I'll pretend I know what any of that means and shake my head
Also, FWIW after doing some research (no, not scientific... Just this once I am going off of user reviews in various places) I found that Wondfo HPTs are considered less reliable and for whatever reason they do provide false positives more often. Again, this is based on user reviews (from forums, etc) so take it with a grain of salt.

[gdaisy09]

Jan 15, 2015 1:32:12 GMT -5 almachs0786 said:

I'll pretend I know what any of that means and shake my head
Also, FWIW after doing some research (no, not scientific... Just this once I am going off of user reviews in various places) I found that Wondfo HPTs are considered less reliable and for whatever reason they do provide false positives more often. Again, this is based on user reviews (from forums, etc) so take it with a grain of salt.

I think they're considered less accurate than a FRER, however I don't think it's fair to say they're fairly inaccurate, which is what PP said. I think most people on this board test with wandfos most of the time and verify with a FRER if they get a BFP. 

[nomnom]

Jan 15, 2015 8:26:42 GMT -5 gdaisy09 said:

 I think most people on this board test with wandfos most of the time and verify with a FRER if they get a BFP. 

I think that's going to be my plan, but I'm saving the FRER until Saturday morning of my beta. I want a good, reliable heads-up that day. Until then, I'll just assume that the wondfo is a good sign but not a definitive answer.

Thanks for your feedback, y'all.

[emejay]

Jan 15, 2015 9:52:10 GMT -5 nomnom said:

Jan 15, 2015 8:26:42 GMT -5 gdaisy09 said:

 I think most people on this board test with wandfos most of the time and verify with a FRER if they get a BFP. 

I think that's going to be my plan, but I'm saving the FRER until Saturday morning of my beta. I want a good, reliable heads-up that day. Until then, I'll just assume that the wondfo is a good sign but not a definitive answer.

Thanks for your feedback, y'all.

**Lurking **

I've only had evap on Wondfo when I was triggering. Always grey-pinkish, always at or after the 10 minutes mark. Can it be that?

[almachs0786]

Jan 15, 2015 8:26:42 GMT -5 gdaisy09 said:

Jan 15, 2015 1:32:12 GMT -5 almachs0786 said:

I'll pretend I know what any of that means and shake my head
Also, FWIW after doing some research (no, not scientific... Just this once I am going off of user reviews in various places) I found that Wondfo HPTs are considered less reliable and for whatever reason they do provide false positives more often. Again, this is based on user reviews (from forums, etc) so take it with a grain of salt.

I think they're considered less accurate than a FRER, however I don't think it's fair to say they're fairly inaccurate, which is what PP said. I think most people on this board test with wandfos most of the time and verify with a FRER if they get a BFP. 

Yes, you're correct, that was probably not the best way to put it. However, in comparison, they're less accurate... But inaccurate was the wrong word to use. Ty

[gdaisy09]

Jan 15, 2015 11:04:44 GMT -5 almachs0786 said:

Jan 15, 2015 8:26:42 GMT -5 gdaisy09 said:

I think they're considered less accurate than a FRER, however I don't think it's fair to say they're fairly inaccurate, which is what PP said. I think most people on this board test with wandfos most of the time and verify with a FRER if they get a BFP. 

Yes, you're correct, that was probably not the best way to put it. However, in comparison, they're less accurate... But inaccurate was the wrong word to use. Ty

I think most people take the loss in the positive predictive value (true positive/(true positives+false positives)) for the cost savings of like $0.37/wondfo versus like $4.00/FERE.

[nomnom]

Can pee on 10+ wondfos for the price of one FRER.


*** possible BFP continued ***
FWIW, I followed directions last night and still got a little pink line, so I don't think it is an evap at least. Saturday (FRER and blood test) will tell me if it is accurate. After nearly two years of TTC and more than 6 months of various treatments, I'm hesitant to believe anything but a couple of blood tests and ultrasound.

[pismoduo]

If you want something other than the Wondfos but don't want to spend too much more, Wal-mart has their "First Signal" pink dye tests for 88 cents each.

[BrewGirl]

My "non authentic" wondfo hpts with the blue handles gave me evaps on every single test I took this past cycle. They were blue dye I believe too. All FRERs were BFNs. They suck.

[almachs0786]

Jan 15, 2015 13:40:15 GMT -5 nomnom said:

Can pee on 10+ wondfos for the price of one FRER.


*** possible BFP continued ***
FWIW, I followed directions last night and still got a little pink line, so I don't think it is an evap at least. Saturday (FRER and blood test) will tell me if it is accurate. After nearly two years of TTC and more than 6 months of various treatments, I'm hesitant to believe anything but a couple of blood tests and ultrasound.

FTR, I wasn't saying to pee on all the FRER's you can find. I meant that if you were questioning your results to use an FRER to verify. I prefer the walmart 88 cent cheapies myself...

[nomnom]

Jan 15, 2015 15:46:55 GMT -5 almachs0786 said:

Jan 15, 2015 13:40:15 GMT -5 nomnom said:

Can pee on 10+ wondfos for the price of one FRER.

FTR, I wasn't saying to pee on all the FRER's you can find. I meant that if you were questioning your results to use an FRER to verify. I prefer the walmart 88 cent cheapies myself...

Sorry if that came across as snarky. I thought it was funny. The picture in my head was a sane woman peeing on one FRER and a crazed, medicated (fertility treatments) woman peeing on all 10 wondfos at once, just in case some of them are bad. Kind of a survey approach to POAS.

ETA: The rest of that post is me thinking out loud.