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Q: 3 Positive Urine But Negative Blood Test
asked by: axisac on October 17th, 2005
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Hello, about 2 weeks ago I thought I got my monthly cycle. So I did what I normally do and went to sleep. The next morning to my surprise I no longer had it. The next morning I took a hpt and it came back positive. So I took 2 more and they all came back with the same response. I have classic symptoms of pregnancy and everything. I went to my primary doctor since my ob couldnt see me for another 2 weeks. She took blood and urged the ob to see me the next day to make sure everything was ok. I went to the ob the next day and after her exam she said everything seemed fine. She also took blood. However my primary called me yesterday to say that she doesn't know what is going on but the lab came back negative for pregnancy. I am very worried and confused. I definately feel pregnant. Now I am playing phone tag with my ob's nurse and she said that I can't have a u/s til nove.1 I feel that is too late. Should I be worried, has anyone heard of this before, should I just go to the er and get an u/s there? :cry:
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lil_blaze2004
replied on October 18th, 2005
Moderator
Ya I would go get one done in the er, or get another blood test done. That's kind of weird. Good luck!!!!
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axisac
replied on October 18th, 2005
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Results
Hey girls, well listen to this. After the ob/gyn that I tried to get a hold of told me that they didn't know who I was and couldnt find any of my paper work I called my primary. I took her advice and went to the e.R.. I was there from 8pm until 5 in the morning. But it was worth it!!! They did an internal sonogram since my bladder was not full. And there it was a little baby sac! The sonographer said that it looked like I just turned 5 weeks so there wasn't much to see. The doctor came in at that point and he confirmed it. So they took labs of urine and blood. Then he said that the prenancy was perfect and that I have a mild urinary tract infection. He said that the blood work came out positive for pregnancy! Iwas so relieved! So I am taking some antibiotics and am looking for a new ob/gyn! I will keep you all posted! Thanks
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cutieboo09
replied on June 23rd, 2009
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so wat did your urine test say
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aa_mama
replied on September 11th, 2009
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positive urine test negative blood test
OMG!!! the same thing is happening to me!!! i took 4 urine tests from a local clinic and they all came out positive!! so i went to my obgyn and they gave me a blood test and it came out negative!!! i dont know what to do
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deborahann
replied on September 21st, 2009
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Pregnancy
I took a urine test and it came back negative. However, I nausated and my stomache is crampy and my stomache feels bloated. My period was usual this month. It was spotty the first two days and one day of light bleeding. Then spotty the next day...then NOTHING. I did have unprotected sex on August 22, 30th, and 4th. Period was due on the 16th but the spottiness came on the 14th.

any advice? Should I take another one...?go to the ER to do a sonogram/blood test? HELP
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jadep76
replied on October 10th, 2009
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False positive HCG, or positive urine with negative blood
Yeah, the same thing is happening to me right now. Had multiple brands give me a faint but definite positive urine test 2 mornings ago, and the positive showed up right away (less than 1 minute, and it's still there 2 days later). I had a quantitative HCG blood test less than 24 hours later (yesterday morning) and it was <1, so not preggers. Had unusually mild cramping and heavy flow starting the evening after the multiple positives in the urine and hours before the blood test, so probably NOT pregnant. Still you'd think if EPT and ClearBlue Easy and a hospital brand all gave a positive that there would be something in the blood less than 24 hours later. Very confused and disappointed...
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pleasehelpkelly
replied on November 12th, 2009
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Hi i am in the same boat. i have took 5 hpt (all first response) all positive had 2 neg blood tests.i am still late for my period and still get pos hpt(first resopnse) i have researched and found that they are the best tests and that they pick up from 4.6mol. better then the blood. could i be pregnant i did tests after the blood came back and surprise suprise positive please some1 help me.
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jadephoenix76
replied on November 13th, 2009
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Positive urine prenancy tests, and negative blood tests
As near as I can figure, there are several possible explanations.

First, there's a chance of a mix-up in the lab. If a re-drawn blood test is also negative, then that is not as likely.

Next, I would try a different brand for the urine test. There are incredibly rare cases, from what I've been reading, of women whose pregnancy tests don't turn up positive for a few months. This is very, very rare. I would put this option in the category of "least likely."

Third, testing with too sensitive a urine test may pick up an early miscarriage and give you false hopes, as I've been having.

Blood tests that are quantitative (ones that give an actual #) as opposed to qualitative (yes or no) are more sensitive than anything that gets sold in stores.

With my positive urine testes and negative blood test, it turns out mine was another early miscarriage. I have seen the explanation that HCG shows up first in the blood and then in the urine. It leaves the blood first and then leaves the urine, in cases of miscarriage and also after delivery of a baby. This is a possible explanation for my results. For your sake, I hope this isn't happening to you, too. However, it may be the most likely explanation.

There are some questions to ask which may help clarify this.

If you don't mind me asking, how late are you? Do you know when you ovulated? At how many days post ovulation have you tested urine and blood. Which type of blood test have you had done(# vs. Y/N)? Are your First Response tests faintly positive or strongly positive?

If another brand besides First Response also shows positive, I suggest you bring them to a doctor. Do a little show and tell with your urine and some brand new tests there in the office, if they will let you, and see what a doctor says about WHY you have positive urine and negative blood.

The reason I ask about whether or not you know when ovulation happened is that sometimes it can happen later in the cycle than you expect, and therefore your period will be correspondingly "late." It also is important to know how late you are.

For instance: last month I had an early miscarriage, as indicated by positive urine and negative blood. My period started at 29 days, even with the positive urine tests.
This month I ovulated an entire WEEK later than normal. My cycle went from 29 days last month to 35 days this month, with my period starting on day 35. I had more positive EPT tests (25mIU sensitivity) this month around day 29 and 31, but had I not been checking my LH levels and known I ovulated late, I would have assumed my period was late. Knowing when I ovulated, I was able to figure out when my period was due (approx 14 days after the LH surge). Seeing the positive EPT go away around day 32, before my period was "due" (according to when I ovulated, instead of according to the number of days) lets me know that it looks like another early miscarriage this month.

The point of this long-winded explanation is that if you ovulated late, your period might not be "due" when you expect it to be due.

If you respond, I'll try and help you figure this out.

For my stuff, I'm at the point now where I've decided after this past month to just STOP checking for both ovulation and pregnancy until I'm an entire month "late," at the very least. I've lost count of the number of my early miscarriages, and for my sanity's sake I need to let this go and just let myself be surprised.
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