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Ovidrel injection
Hello all,

Has anyone discussed with their Dr. on how long Ovidrel stays in the system. I have been hearing several different answers, if anyone thinks they may know for sure, can they please help me. Oh yeah, I am trying to be patient but we all know how that goes. LOL
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Avatar universal
I do know...I went threw this last cycle..
I called my pharmacy and asked how long ovidrel 250 mcg stays in your system, and here is what he said:
It has the half life of 29.2 hours, so that means this:
29.5 hours from the injection it is 50% out of the body, then every 29.5 hours, that amount is cut in half, he gave me all the figures:


-50% out
-75% out
-87.5% out
-93.75% out which he said is considered completely out.

So here is what I calculated for myself last cycle:
3/26 - 7:30 am injection
3/27 - 1:30 pm 50% out, 50% left
3/28 - 7:30 pm 75% out, 25% left
3/30 - 1:30 am 87.5% out, 12.5% left
3/31 - 7:30 am 93.75% out and 6.25% left
You keep dividing the number by 2 (6.25 / 2 = 3.125%)
and so on...

Hope this helps...

PS it was still in me 10 days later!!!
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Avatar universal
This is incorrect. You need to start with 5000 for the 250 mcg shot and divide by 2 every 35 hours. This is worst case scenario for getting out of your system.
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Thank You!!!  I'm going to start calculating now....
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Good luck :) just watch out for false positives, I got them and was so disappointed when it was a true BFN :( I hope you have better luck :)
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