Can a blood pg test have a false neg?

iVillage Member
Registered: 01-16-2006
Can a blood pg test have a false neg?
4
Fri, 07-07-2006 - 11:29am

Just wondering because AF is late but blood pg test was neg.

Heidi


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iVillage Member
Registered: 02-02-2006
Fri, 07-07-2006 - 11:49am
Hi Hiedi...same here, I had a blood test yesterday, came back neg, and it's been 38 days since last AF. My gyn is sending me on monday to have a pelvic ultrasound done...she thinks maybe I might have an ovarian cyst, she said that can cause AFs to be late, early, and messed up. I am pretty sure that most blood tests are really accurate. They can detect 5miu of hCG...so I would say that unless you implanted the day you had your blood test, it should be accurate. Were you hoping for a positive? I know I was... we're not really trying, but I was soooo hoping that I got a positive from the dr's. I'm a little sad today, and feel like I can't really talk to anyone about it. It'd be different if DH and I were actually trying, but I think he thinks I'm glad that it was negative...
Well, good luck and (thanks for listening to me ramble)....
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iVillage Member
Registered: 03-27-2003
Fri, 07-07-2006 - 12:32pm

Hello ladies,

actually a blood test can be negative. In my case, I was about 3 weeks late with AF and when I went in for the test, it came back negative. Well, about 2 more weeks passed by and still no AF. I finally decided to go to a clinic and took a urine test and it came back positive. When I called my dr's office, they said that maybe I ovulated late, It was actually really weird... AF came in early Feb, and then 2 weeks later it came again for about 2 days (a bit heavy for it to be spotting). I still don't understand what really happened with my cycle, why it got so messed up, but anyway, I have a happy and healthy 2 year old.

I hope this helps.

iVillage Member
Registered: 02-02-2006
Fri, 07-07-2006 - 12:45pm
Well, it certainly gives us hope! :)
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iVillage Member
Registered: 07-30-2004
Fri, 07-07-2006 - 1:31pm

interesting! I had a blood test (sorry Robin you already know!) on 7/5 got bfn. lmp started 5/10 (when I stopped bc) and I have no idea when/if I ovulated. Last time I had unprotected sex was 6/25, do you think there's any chance the blood test could have been too soon if that's when I conceived?

I think I'm grasping at straws here, I should just accept that I'm NOT pg (yet) lol