Home Pregnancy Test
HCG, or human chorionic gonadotropin, is a hormone made by the pregnancy that can be detected in the mother's blood or urine even before the woman's missed period. This hormone is what we look for with a "pregnancy test".Can medication affect home pregnancy tests
Medication will neither delay a positive result, nor cause a false positive, unless the medication contains hCG (Profasi, Pregnyl, Novarel). This includes pain relievers, antibiotics, etc.You should alse get an accurate result if you are on oral contraceptives. The hormones in the pill do not cause a false positive or a false negative result
hCG Levels
In general, the HCG level will double every 2-3 days in early pregnancy.HCG levels peak at about 8-10 weeks of pregnancy and then decline, remaining at lower levels for the rest of the pregnancy.
See the table below for hCG levels study carried out by Dr. Sherbahn that compared HCG levels for single pregnancies.
How accurate is it
A doctors office test is usually equivalent to the first tier of the home pregnancy tests - reading an hCG level of 15-25 mIU as positive. In fact, they are often the same tests used at home, only with less packaging.An October 2001 JAMA article (JAMA. 2001;286:1759-1761) said the highest possible screening sensitivity for an hCG-based pregnancy test conducted on the first day of a missed period is 90 percent, as 10 percent of women may not have implanted yet. The authors estimate that the highest possible screening sensitivity of a home pregnancy test by one week after the first day of the missed period is 97 percent.
Performing a test
You should use midstream urine - meaning you should pee a little first and then either hold the test stick in your urine stream or use a collection cup. If you would like to collect urine in a cup even though you bought a stick test, you need to hold the absorbant tip of the stick in the cup of urine for 5-10 seconds (TCPI, Inc. says this is more accurate for their tests). Otherwise follow the directions with the test.Read your test documentation to interpret the results.
| Day after HCG or LH | Average mIU/ml |
High mIU/ml |
Low mIU/ml |
# |
| 14 | 48 | 119 | 17 | 12 |
| 15 | 59 | 147 | 17 | 18 |
| 16 | 95 | 223 | 33 | 23 |
| 17 | 132 | 429 | 17 | 21 |
| 18 | 292 | 758 | 70 | 19 |
| 19 | 303 | 514 | 111 | 23 |
| 20 | 522 | 1690 | 135 | 13 |
| 21 | 1061 | 4130 | 324 | 12 |
| 22 | 1287 | 3279 | 185 | 22 |
| 23 | 2034 | 4660 | 506 | 13 |
| 24 | 2637 | 10000 | 540 | 16 |
Tweets for pregnancy test
happyhourmom (Happy Hour Mom)
"I had to buy "fat" shorts today. Sigh"
"I'm really happy, the pregnancy test is negative!... http://bit.ly/XTrw1
4 July 2009, 1:31 pm
ClubPregnancy (Pregnancy)
New blood test could predict success of in-vitro fertilization. #in-vitrofertilization #pregnancy
http://bit.ly/szVUj
4 July 2009, 1:09 pm
lonnalamm (Lonna)
An eventful day at work. An unwanted pregnancy made a woman cry. Thanks for taking the test in the bathroom and sharing. Go America.
4 July 2009, 1:00 pm
Oriole2 (Oriole2)
Dollar Store Pregnancy Test!?! LOL RT In the dollar store? Really? Umm, I wouldn't trust it. http://mypict.me/7B0R (via @suPEARLative5)
4 July 2009, 12:40 pm
Peter_Adams (Peter Adams)
I want Natalia to go up to Michelle and say "Hey! Aren't you the lady on the commercial of my pregnancy test?" #GL
4 July 2009, 12:18 pm
XxNefertarixX (Shani Ellis)
AAAAAAHHHHH! EEEEWWW! I just found my old pregnancy test....
4 July 2009, 11:30 am
Jarvis_J (Jarvis)
RT @schmiss: Rosemary's Faulty Pregnancy Test #unscarymovies
4 July 2009, 10:00 am
schmiss (schmiss)
Rosemary's Faulty Pregnancy Test #unscarymovies
4 July 2009, 9:51 am
gimmeminestype (Erica Jackson)
goin to take a pregnancy test caz i was raped
4 July 2009, 9:22 am
SteffanieLynn (Steffanie)
Kelsey: negative Me: your face is negative. Kelsey: im always positive Me: your pregnancy test was positive.
4 July 2009, 9:11 am
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