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VioletStar 
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Joined: 07 August 2007
Location: Nelson
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 Topic: Day 21 Bloods ???
Posted: 14 November 2007 at 11:38am |
Hi all,
Just curious to whether anyone knows much about Day 21 bloods for progesterone?
Q: For ovulation to show up in Day 21 bloods, did you have to ovulate on a certain day or range? Like on day 14-16 or something? Or if you ovulated on day 20 or even day 21 would it show up?
Lol I think too much! But something I've been wondering so I thought I'd put it out there.
TIA 
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Paws
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Joined: 01 January 1900
Location: Auckland
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Posted: 14 November 2007 at 12:04pm |
I think I have had them done but can't remember the details really. Maybe it was day 14 (helpful aren't I  ).
I'm pretty sure though if you have ovulated on day 20 is should show up in the bloods.
Maybe someone else could shed some light.
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Kazzle
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Posted: 14 November 2007 at 12:05pm |
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when i last had day 21 bloods done, it showed that i had ovulated, and had how much progesterone was in my system on day 21
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VioletStar
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Posted: 14 November 2007 at 12:11pm |
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Kazzle, do you know how long it stays in your system for?
At a level where it would pass for O I mean...
Edited by wishin41
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scarecrowfarm
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Posted: 14 November 2007 at 1:49pm |
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I did them 7 days after ovulation because I had read that it would give the most accurate results. Yes, day 21 just assumes you ovulate around day 14, but if you ovulate a different day it will skew the results. Some doctors just seem to assume that women don't know when they ovulate so they just specify 21 days, but if you are charting you've probably got a better handle on it.
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Robyn
www.scarecrowfarm.co.nz
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scarecrowfarm
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Posted: 14 November 2007 at 7:07pm |
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However the way I understand it, if you ovulate on CD20 and do the test on CD21, it is likely to show a week ovulation as your progesterone levels haven't had a chance to rise all the way.
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Robyn
www.scarecrowfarm.co.nz
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VioletStar
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Posted: 14 November 2007 at 10:00pm |
Oh ok, think I've got that, thanks for all the info :)
Been really helpful 
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Lexidore
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Posted: 06 July 2009 at 2:52pm |
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Bumped for jazzy
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Day 21 Bloods ???
