OPK’s as HPT’s

Anyone used OPK's (the test strips) successfully as a pregnancy test?
(I know, just use a test, right? But I have 25 OPK's and 1 HPT, and I know that HcG and LH are structurally similar - apart from one protein, and its rumoured that you can actually pick up on pregnancy hormone with the OPK)

Any real life stories, DPO tested, brand of OPK or other details I haven't thought of, please? First wees??

Some girls on here have used an OPK to test before a HPT. The OPK will go super positive if your in for a chance of getting a BFP.
I wouldnt rely on it but its way cheaper than a HPT

GL

I've only done it for fun after I got a BFP on a HPT, and it did work. Maybe do the OPK and then if that's positive take it as a maybe and do the HPT before you accept it as a BFP. Does that even make sense?

I tried it and there was a faint 2nd line on the opk (FMU) and a definate 2nd line on the HPT so didnt work on the one instance I tried... Worth a shot anyway but I wouldnt rely on the result (either way it indicated)

I did this... I had heard sometimes it will give you a positive result so I thought whats the harm as I had plenty of them.... I got a positive on the OPK (very clear) and I then spent the money on the HPT! The HPT was positive but faint

I got a positive on an OPK after a BFP on a HPT as I was wondering if it would be positive (I had heard people saying they could be used for both) I was about 8 weeks UTD though I think as this is a bit of a surprise pregnancy! Like the others have said i would do one for interest sake and if you get a positive then do a HPT just to be sure

Yep, I had seen that website, but hadn't picked up on the testing after af due. Tested on 7DPO (caved/curious) with definitely not FMU, and using the Baby4U OPK's, but nowt biting. Now on 9DPO and pretty sure not worked this cycle :-(. Was our one impatient cycle of trying while STILL waiting for ivf (because I thought I might be able to miscarry in time before the cycle eventuates)

Yeah the idea was to test before using HPT and not 'waste' the HPT (I've only ever had +HPT, I'm going for a hat-trick, don't want to skew the score). I'm not a POAS addict AT ALL, but am fairly impatient person at the best of times. Thanks to everyone who responded, I have read all you replies and assimilated into my own head (must not rely on OPK, is my conclusion)

Second question, if anyone knows, do you know why I have it in my head that BBT temps in the luteal phase should be over 36.5 to support a pregnancy? Will put this in the charting thread too (although I can never keep up there!). Mine are systematically getting lower (below 36.5 now) each cycle and I know my oestrogen is high -CD2 bloods on 2 consecutive cycles show it is 4 times what it 'should' be at that point in the cycle. Shezzey, if you are reading this, you were right 2 years ago!! I'm assuming that its the E2 thats pulling the temps down a bit, but thats based on my own flawed logic than anything any fertility expert has ever told me.

thats quite a triphasic chart, huh? Looks like Ollie implanted on 7DPO and then temps went a bit higher. That was a long follicular phase!
Mine are gradually decreasing, doesn't look like implantation dip :-(.

My understanding is that the P4 raises temps and E2 lowers them, therefore (I'm guessing) that oestrogen dominance overrides the P4 in the luteal phase and pulls the temps down a bit. 3 times out of 4 I have come back with nice high P4's (ie over 47!) but cycle has changed again in the last 6 months