Blood Drug Testing

5 positive urine pregnancy tests and 1 negative blood test is it too early to detect in blood?

hi so i had already posted that i found out im preg..well i had my blood test done monday its now wednesday here and results came in this morn as blood test neg! when i went docs mon i done urine test at docs and was pos doc said appears your preg we will do a blood test to confim etc well now im confused she did say that if its early on it may not pick up in blood if hcg levels are low..but if my urine tests are picking it up im confused i panacked of course and went out this morn and got 2 more preg tests just done them and bboth said pos i seen the little + sign lol in 1 test and the 2 lines on the other test i did i have to go back this tomoro and have another blood test to see if it will come up then in bloods but just wanted any1 had this happen b4 and there experiences of this?? thankyou its now thursday and im reposting this question ive had many great replies but wanting more for some reassurance as my af still hasnt come im having many preg symptoms still tiredness nausious tender breasts and cramps no bleeding or spotting im now nearly 5 days past due date for af 25 minutes ago - 4 days left to answer. Additional Details oh i may add im now 3 days late for af...and roughly 17dpo in my cycle...roughly as im not sure when i ovulated..these last 1 preg tests came up + very obviously and the other 3 tests i done on days 13 14 15 dpo that were very faint + thankyou 23 minutes ago on no medication thanks 37 minutes ago - 4 days left to answer. Additional Details OH NOW ITS 6 TESTS THAT ARE + INCLUDING THE 1 I DONE AT THE DOC SURGERY!! 36 minutes ago

Public Comments

1. Did they do a QUANT blood test or a QUAL blood test? If it was a QUANT blood test that means they ran your blood in a machine to read exactly how many HcG are in your system. Anything over a 10 is considered pregnant, but because of human and machine error many hospitals require a certain amount, it's different at each lab, in your system before they can say with absolute confidence that yes, you are pregnant. If it was a QUAL test, then they draw blood, place 3 drops on a HPT and wait 3 mins. It's possible to get a false negative from this is tested to early. With all that said, blood is more accurate then urine. Odds are you are pregnant and they could not say yes as your HcG where not high enough for the OK when you did your blood test. ETA: Chava: DPO = Days Past Ovulation, AF = Aunt Flow aka your period.
2. It sounds to me like you are definitely preggies!! it is also strange to me that a HPT can pick up the high HCG Count, but the blood test can't! They probably tested wrong!
3. You might not like my answer, but I would say STOP buying all these tests :). You're spending a lot of money. I'm not sure what all your abbreviations mean (dpo and af). I'm guessing that you're about 17 days past your period due date which means you would be about 1-2 wks preggie. Now, this is a bit early for a blood test to show up your hormone levels. It's hard, but try not to do anything for another week and then get another blood test. By then you'll be about 3 wks and that gives your body enough time to produce some nice hormones to show up in the test. But most of all, talk to your doctor. He/she is the one to advice you on this, not anyone on this forum. There are hardly any doctors on here and seriously, you need doctor's advice in pregnancy. I hope it all works out. Please let us all know!!
4. Depends on the type of blood test. Urine-based testing only detects hCG making it almost impossible to have a false positive (as your body doesn't produce the hormone if you're not pregnant) There are several types of blood tests that can be ran. One will read/detect the hCG (like a urinalysis) the other will count it (which can determine how "far along" a person is). There is always room for human error in a lab as sometimes they *can* mix up blood or run a wrong test. You can always wait a week or two more and have them rerun it. 1st answer is on the money, though.