Zen_Jenn
Mother
- Joined
- Aug 12, 2009
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Hi y'all,
I've made it through my first 'active TTC' cycle, and have found the statistics a little baffling. Every time I took an HPT and saw a I wondered what the probability of me actually being pregnant was. So, I thought I'd start this thread so we can discuss, not just here anecdotes about a friend's sister's cousin who . . .
Anyway, to begin, here's what I found from FRER website:
"In clinical research, FIRST RESPONSE® Early Result Pregnancy Test detected the hormone level in 69% of women four days before their expected period (which is five days sooner than the day of their missed period), in 83% of women three days before their expected period, in 93% of women two days before their expected period, in 93% of women one day before their expected period."
Now, I would assume that it means of women who actually are pregnant at the time of the test, as opposed to determining a BFN when the woman is not pregnant. Also, the whole 'days before' thing is confusing. If I have a really long cycle (i.e. AF is expected at 20dpo), then 4 days before is 16dpo, and I would expect a BFP if I were pregnant, whereas if my cycle is short (AF expected at 14dpo), I may not expect to see a BFP at 4 days before (10dpo). Is this correct? Anyone have some insight?
The First Response Rapid Result is "99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary." It seems that it only finds 95% of actual pregnancies (i.e. 5% of pregnancies have hormone levels that are too low to be at time of testing).
Anyway, I like to have all the information so I can update my beliefs whenever I get a . It would probably be easier just to wait until 2 days after expected AF, and not have to worry about the numbers .
- Jenn
I've made it through my first 'active TTC' cycle, and have found the statistics a little baffling. Every time I took an HPT and saw a I wondered what the probability of me actually being pregnant was. So, I thought I'd start this thread so we can discuss, not just here anecdotes about a friend's sister's cousin who . . .
Anyway, to begin, here's what I found from FRER website:
"In clinical research, FIRST RESPONSE® Early Result Pregnancy Test detected the hormone level in 69% of women four days before their expected period (which is five days sooner than the day of their missed period), in 83% of women three days before their expected period, in 93% of women two days before their expected period, in 93% of women one day before their expected period."
Now, I would assume that it means of women who actually are pregnant at the time of the test, as opposed to determining a BFN when the woman is not pregnant. Also, the whole 'days before' thing is confusing. If I have a really long cycle (i.e. AF is expected at 20dpo), then 4 days before is 16dpo, and I would expect a BFP if I were pregnant, whereas if my cycle is short (AF expected at 14dpo), I may not expect to see a BFP at 4 days before (10dpo). Is this correct? Anyone have some insight?
The First Response Rapid Result is "99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary." It seems that it only finds 95% of actual pregnancies (i.e. 5% of pregnancies have hormone levels that are too low to be at time of testing).
Anyway, I like to have all the information so I can update my beliefs whenever I get a . It would probably be easier just to wait until 2 days after expected AF, and not have to worry about the numbers .
- Jenn