1. Originally Posted by francesthecat
Good luck to you both for your transfers that are coming up Sucba and Lilypily.

lots of baby dust to you both
Thanks so much. Scan to check lining on the 26th

2. Akakura: How are you doing Luv?? Was your scan scheduled for today??

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Originally Posted by ScubaGal
Happy to assist. I worked it all out last month and saved it so I could use it again
Oh oh oh when can I test @scubagirl? I had 500 of ovidrel on 9/8 I'm badly wanting to POAS tomorrow

4. Ok I'll work it out gimme a minute.

5. Ok it's 99.2% out or more but the 500 Ovidrel is equivalent to 13400 of HCG level so worst case scenario you still have 100 of HCG left in your system and anything above 20-25 will trigger a positive. It could be much lower than that but don't rule out the possibility of a false positive.

6. *disclaimer I am neither a doctor nor a mathematician - these are calculations I worked out based on things I read on the inter webs...

7. Originally Posted by ScubaGal
*disclaimer I am neither a doctor nor a mathematician - these are calculations I worked out based on things I read on the inter webs...
You are very good at it

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Originally Posted by ScubaGal
*disclaimer I am neither a doctor nor a mathematician - these are calculations I worked out based on things I read on the inter webs...
Thanks dr scubagal

9. Well my working out is based on the information for practitioners leaflet I found somewhere on the Ovidrel website. It said that usually Ovidrel leaves the body at a rate of halving every 29hours plus or minus 6 hours. So I do all my calculations based on 35hrs although actually it could be much quicker.

It goes like this:

If you last injected Ovidrel ten days ago then that's 10x24hrs = 240hrs.

240/35 (slowest possibly elimination rate) = 6.8 lots of halving,

Here's the halving chart remember each lot is 29-35 hours - it's not days:
1 50% out
2 75% out (25% less)
3 87.5% out (12.5% less)
4 93.75 out (6.25% less)
5 96.875% out (3.125%)
6 98.4375% out (1.5625% less)
7 99.21875% out (.78125% less)
8 99.609375% out (.390624% less)

I also read online that 250 Ovidrel has the same *effect* as 6700 HCG (some website say slightly less than this so better to be cautious).

Sooooo..... You work out how many days since injecting, times that by 24hrs, divide by 35 (or 29 to work out the average) then look at that list. Once you get to 8 lots of elimination, you're getting pretty close - because there's only 0.39% of the HCG left.

If your dose was 250 Ovidrel (aka 6700) then you simply calculate 0.39% of 6700 which is 26 - and that's only barely enough to trigger a positive on a POAS so by then you are starting to see real positives.

See?

Easy.

10. Therefore, @littlekiwi injected 500ovidrel equivalent to 13,400 HCG on 9/8 which was 11 days ago.

11 days x 24hrs = 264 hrs.

Divided by the average of 29hrs and you get a bit over 9 times that her dose has halved and only 0.195312% of it is still in her system. 0.195312% of 13,400 is 26 which as above is only barely going to trigger a First Response Early Result, so a decent line at this point really will be a line).

I.e. The HCG is pretty much gone from her system, assuming she has an average elimination rate.

So she can POAS anytime she likes

But being cautious she might wait another day.
Last edited by ScubaGal; 20-08-2014 at 21:48.

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