Getting Pregnant

When a women becomes pregnant her body starts to produce a hormone called hCG (Human Chorionic Gonadotropin) This hormone give the positive result on both urine and blood based tests. hCG is produced by the embryo at implantation (when it starts to implant itself into the utering lining.) Implantation occurs 6-10 days after conception.

Popular HPT's & HcG Sensitivity

Not all pregnancy tests are created equal. The more sensitive the test (the smaller amount of hCG it can detect), the earlier the opportunity to detect pregnancy. That means with a test sensitive to 20 mIU/ml hCG, a home pregnancy test is accurate as early as six to eight days after conception, well before your first missed period.

NOTE: Conception may take place several days after date of intercourse, so the date of intercourse should not necessarily be viewed as the day of conception.

Brand	Detects
Early-Pregnancy-Test	20 mIU
AimStick Dipstick	20 mIU
AimStep Cassette	20 mIU
AimStick Midstream (AccuHome)	25 mIU
Clearblue Easy (UK)	25 mIU
Day Seven (CDN)	25 mIU
Health Check	25 mIU
One Step Be Sure	25 mIU
Rapid Self-Test	25 mIU
E.P.T	40 mIU
Clearblue Easy (US)	50 mIU
Boots	50 mIU
Early Bird One Step	50 mIU
Early Pregnancy test	50 mIU
Hannaford	50 mIU
Rite-Aid	50 mIU
Selfcare	50 mIU
CVS	60 mIU
First Response	100 mIU
Answer	100 mIU
Conceive	100 mIU
Precise	100 mIU
Fact Plus	150-250mIU

Q: How soon after ovulation can I test?
A: The earliest you can get a positive result on the most sensitive pregnancy tests is seven days after ovulation. Implantation needs to occur before hCG is produced, and that generally happens between 6-12 days post ovulation, usually by 10 days after. For this reason, it makes economical sense to wait until 10-12 days after ovulation, but even then a significant percentage of women who are pregnant will still show a negative result. Many people won't have a positive HPT until the first day of a missed period or even a few days later.

Q: What time of the day can I use the test?
A:Because home pregnancy tests detect hCG, diluted urine samples (from drinking large quantities of water) aren't recommended. It is best to collect urine samples containing the highest presence of the hCG hormone. First morning urine is the ideal sample as it contains the most concentrated presence of hCG. Otherwise, waiting several hours (4-5 minimum) is considered sufficient duration for an HPT.


supported by:http://www.pregnancy.org/