Teen Pregnancy Forum - How Accurate Are Blood Tests?
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How Accurate Are Blood Tests?

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Medical Questions-> Health Forums -> Teen Pregnancy -> How Accurate Are Blood Tests?
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lee

Experienced User , Rather EHEALTHy
Joined: 15 Aug 2003
Posts: 122
Location: canada
How Accurate Are Blood Tests?
Posted: 08-15-03 02:28am

I had a blood test the day I was supposed to get my period but it tested negitive for pregnancy I still havent had my perod how accurate are these tests? I am 4 days late? Can I still be pregnant?
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lhileman

Experienced User , Rather EHEALTHy
Joined: 06 Aug 2003
Posts: 79
Location: Griffin, Ga.
Blood Teast
Posted: 08-15-03 09:02am

These are the most reliable test there are. Urine test are most affective when taken with first moring urine. Good luck !!!!!!!!!!!!!!!!


Embarassed lhileman
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lee

Experienced User , Rather EHEALTHy
Joined: 15 Aug 2003
Posts: 122
Location: canada

Posted: 08-15-03 11:28am

So there is a possibility that I can still be pregnant after getting a negitive on a blood test the day I was supposed to get my period. What do you think the chances are?
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blu_eyes00

Experienced User , Rather EHEALTHy
Joined: 29 Jul 2003
Posts: 96
Location: Canada

Posted: 08-15-03 13:08pm

Well, with pregnancy tests, you can get false negatives, but there is no such thing as a false positive (if its positive, 100% you are pregnant) soo, just because it says "negative", it may not be. But, just remember, it did not say "positive". Wait a couple days and take another test. Blood tests are the most accurate of all pregnancy tests...

Good luck
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Misty

Experienced User , Rather EHEALTHy
Joined: 11 Aug 2003
Posts: 52
Location: Nova Scotia
Dont Stress
Posted: 08-15-03 14:12pm

Just take another test, if it comes up negative again put it out of your mind if you're stressing about it then that can make you be late or skip a period. Good luck Wink ~misty
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lee

Experienced User , Rather EHEALTHy
Joined: 15 Aug 2003
Posts: 122
Location: canada

Posted: 08-15-03 14:26pm

Should I take one right away or should I wait I had my blood test like 4-5 days ago, so should I give it a week or so??
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Misty

Experienced User , Rather EHEALTHy
Joined: 11 Aug 2003
Posts: 52
Location: Nova Scotia

Posted: 08-15-03 14:39pm

Give it another 3 days or so and then take another one, good luck
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lee

Experienced User , Rather EHEALTHy
Joined: 15 Aug 2003
Posts: 122
Location: canada

Posted: 08-15-03 15:04pm

Thank you guys so much for all of your support, its so great to talk to people that are experienced and helpful. I'm so much more relaxed eith everything! Thankx

lee
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HongKongChick

Experienced User , Rather EHEALTHy
Joined: 11 Aug 2003
Posts: 222
Location: Oklahoma

Posted: 08-15-03 17:37pm

Yes misty and blue are right. Blood tests are the most accurate test u can get.

Home preg tests are pretty accurate too, but still, there is a slight possibilty that will be wrong.

I always tell girls that take a home preg test every 3-4 days for the next two weeks so the error possiblity is way lower
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cantwait2bmom

New User, Becoming EHEALTHy
Joined: 18 Aug 2003
Posts: 24
Location: Toledo, OH
Blood Test Can Be Nerve Wracking
Posted: 08-24-03 12:01pm

It depends on the kind of blood test they give you. There's one that is the hcg blood test, which detects the same hormone hcg that the urine tests do. And there's the quantatative blood test which will give a number count of how far along you might be. These tests screwed me up since the darn doc kept prescribing the quantatative test, and I wasn't very far along, so my numbers were like 0-3. If they are 5 or higher for a quantatative test, it usually indicates you might be pregnant. Make sure they just give you the hcg test first to just determine whether or not you're even pg or else it will be frusterating. They were wrong with mine 3 times....

Good luck
beth edd 12-25-03
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glitter8370

Experienced User , Rather EHEALTHy
Joined: 04 Nov 2003
Posts: 135
Location: bc canada
Takes Time For Horomones to Change..
Posted: 12-11-03 17:57pm

Hey with blood tests or urine tests it takes time for your horomones to change before it can be read accuratly.. My doctor has told me it takes about 2 weeks after conceiving for it to show up in a urine or blood test
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