Pregnancy Test Sensitivity and Early-Detection Testing
HCG pregnancy tests determine pregnancy through the detection of the hormone hCG (Human Chorionic Gonadotropin) in a woman's urine. In technical terms, hCG is a glycoprotein hormone secreted by the developing placenta shortly after a fertilized egg has implanted in the uterine lining.
Clinically speaking, HCG is measured in thousandths of International Units, or mIU. Pregnancy tests with a sensitivity of 20 mIU/ml are more sensitive than tests with 50 to 100 mIU/ml. Test brands will display how sensitive their tests are using mIU as the standard unit of measure. Test sensitivity equates with early-detection - and the lower the number, the sooner a test can detect pregnancy. The most sensitive pregnancy tests can detect hCG levels at as low as 20 mIU - or at around 8 days following implantation of the egg.
Early-Pregnancy-Tests.com is one of the first Internet providers of FDA approved early home pregnancy tests. Tests are affordable, generic, come individually sealed with expiration dates extending two years. Early-Pregnancy-Tests.com also maintains a user-generated photo gallery of positive pregnancy test images.
How Soon Can I Test?
If a woman is pregnant, the amount of hCG in her system should be around 25 mIU at 10 dpo (days past ovulation), 50 mIU at 12 dpo, 100 mIU at around two weeks dpo. Blood tests can determine pregnancy as low as between 5 to 10 mIU/hCG, though with levels of 5 mIU, a conclusive determination cannot be made without risking a "false positive" (as low levels hCG can be present in the body without pregnancy).
Drugstore pregnancy tests generally detect pregnancy at 50 mIU - 100 mIU hCG, though you can find early-detection pregnancy tests on the Internet with sensitivity levels as low as 20 mIU. With all diagnostic products, take care to follow the instructions. Please consult the chart below for a comparison of pregnancy tests:
| Early-Pregnancy-Tests.com | 20 mIUs hCG |
| E.P.T. | 40 mIUs hCG |
| Clearblue Easy | 50 mIUs hCG |
| Store Brand: Rite-Aid | 50 mIUs hCG |
| First Response | 100 mIUs hCG |
| Answer | 100 mIUs hCG |
| Store Brand: Equate/WalMart | 100 mIUs hCG |
| QTest | 100 mIUs hCG |
| Store Brand: Walgreens | 100 mIUs hCG |
| Precise | 100 mIUs hCG |
For earliest detection of pregnancy, use first morning urine, as this sample contains the most concentrated amount of hCG. If using first morning urine is not possible, avoiding urination for several hours before using a pregnancy test. Frequent urination - or a diluted sample - can decrease the amount of hCG in your urine, interfering with early-detection.
What does a faint line on a pregnancy test mean?
On a pregnancy test, a faint test line - or color band - is usually indicative of a positive result, as long as it's read within the allotted time frame - or reaction time of the test (usually at 5-10 minutes). If you do the pregnancy test properly and read it within the recommended time, then a faint and weak line is very likely a positive pregnancy test. Explanations for a faint positive line include:
> Back to Pregnancy Tests
Comments
I think I may have found some good topics about pregnancy advices. You should be able to find many at Askdiana.net
I have been told that I am an irregular person, when it comes to my period.. i have had moments where its 2 months without it.. and then out of no where it hits me. my last period was in january, i missed february, and right now its march. i took a Answer pregnacy test... the first line comes out really bright and the other one you can barely see it. it says its soposed to be 2 lines if i am pregnate and only one if im not. im confused because on the instructions it shows that the 2nd line should be a negative.. but the first one shows only.. does that mean i am??
I was able to come across cv writing with similar content but this has been the most informative so far.
Hello,
I have PCOS too. I was having 5 week cycles after I stopped BC and my doctor thought that it was too long. She said I'm either not ovulating or not having "good" ovulations (if that makes sense). They've put us on clomid, and we're in the second month. You should probably talk to your doc about it, it's really common and I know for a fact I've ovulated it with. Hope that helps.
ok so i took the second test an hour later. it was positive even with my pee being kinda clear. feeling kinda morningsickish. no fun. mouth filling with saliva. uhh sucks.
Tomorrow buying barf bucket, ginger ale, anything else to stop this constant indigestion I've been having and also the morning sickness i will apparently be having.
cheap replica watches|breitling watches|In modern society, brand watches and designer handbags are the symbols of one’s social status and personal identification. People are longing for them while always frightened by the whopping price swiss replica watches
I have been having symptoms for a couple weeks that are signs of possible pregnancy. Then, this week I've been having odd cramps and little pains and frequent urination weird. I thought I was going to start my period but never did. Today I went to the dollar store and casually bought 3 pregnancy tests just to be sure. I've thought I could be pregnant other times, so I just took the tests to see. And to my surprise while I looked at both lines appearing I almost misread it as negative. But I was like wait wait omg theres 2 lines. It was faint right when the pink went across the screen thing, but then within 1 minute it was dark lines. I have 2 other tests to take, and I'm sure within another hour or two I'll need to pee again so I'll take the second test. I'm not going to freak out yet. This would be my first pregnancy if I am, and over the years I've started to wonder if I could even get pregnant. It's the first time a dollar store test has said positive for me, theyre cheap so I buy them if I'm a day late or if I'm worried or whatever. I've had weird thoughts for afew weeks though that maybe I could be preg. I'm even having crazy dreams.
The test is 25 MIU and I took it in the evening about 30 minutes ago. Could it be a false positive? It's not even morning though and it showed up pretty quick. I should have done 2 tests at once but I didn't want to carry a pee cup out of the bathroom while others were at my house lol.
my ovulation test only had one line does that mean its negative or didnt work right?
Hi there,
We are TTC for the 2nd month. Last month my cycle was approx 5 weeks in length. I had an ovarian cyst which burst and after this was detected I got my periods. I have also come off the pill approx 6mths ago. I have never been one to take notice of my cycles but will begin to document a bit more accurately. I do recall my last period was on the 5th or 6th of December. I am not sure when I actually ovulated this month. On sat, sun and mon I had really bad cramping like my periods were coming, but they have not arrived. My boobs have also been tender since Sat. As of Tues no period pains but I still have tender boobs. I have had no other obvious symtoms although my boobs seem fuller and harder. I have done several tests all early morning and all negative. I would have thought that if I was pregnant it would have shown up by now and if I'm not then it seems odd that i had period pains but still have no periods. The PMS symptoms generally occur 24-48 hrs prior to the commencement of my periods. I'm really confused. Do you think it is still possible that I'm pregnant?
Dear friend:
Nice to give a mail to you,Since we are the factory which produce pregnancy test kits,ovulation test kits,and other medical tests,so i search one company that can coorperate with us so that,we can get an win-win coorperation ship,if you pay interest,pls go to our website to have a look,our website is:
http://www.egens-bio.cn/
And our alibaba's net is www.ntys.en.alibaba.com
if you want import these products from China,pls contract with me,we can provide high quality products with more competitive price to you.
my mail :egenslily@hotmail.com or
egenslily@yahoo.com
If you need any sample also pls contract with me as freely
Hope your replay,many thanks
Lily
Post new comment