How accurate are the blood tests?
Find a Conversation
How accurate are the blood tests?
| Tue, 09-30-2003 - 12:21am |
Hi! I am new on these boards, but I really need some advice. I have had 2 kids and we are now trying for#3. My last period was August 26, so I was supposed to O 9/9-9/12 - Well I thought for sure that we had succeded but all the HPT showed negative. (with my first 2 kids they were positive right away) I finally went to my Primary care Dr and asked him to do a blood test to show that I was preg. He called a few hours later and he said it was neg! I am over a week late and I am so confused and way bummed. I really thought that I was preg. Has anyone had a false blood test before? Any advice would be appreciated. Thanks! Andrea

Blood test are very accurate.You've mentioned that yo're one wee late andyo didn't get yor AF yet.Is your period regular/irregular? how many days is your cycle?
Lets suppose that you have regulat period and the cycle is average 28-30 days. Your last LMP was 26 Aug.then your period should be due within 22-24 Sept.
There are two kinds of blod test.Qualitative blood test that either says negative or postive ( I guess that's the one you did at dr. ofice) and the other is quantative blood test that shows the exact level of HCG in blood even if one unit only.
The blood test you've done can detect pregnancy ( if happened) on the day your period is due or if you missed period by one day.You already missed it by several days.
I think you are Not pregnant as there has been enough time passed for blood test to detect pregnanacy and you got a negative result.Your AF could be late due to stress and thinking.Calm down, and if you want to be sure that you're pregnanat or not and can't wait, you can do this quantative blood test to show HCG level.If the result was < 5 then you are *NOT* pregnanat and you're going to recieve AF soon.
I hope this helped.Good Luck !
Good Luck