is it possible to have a negative urine test and positive blood test?
442874
One explanation for a false negative pregnancy test is what's called the hook effect. It's not common but sometimes this effect leads to urine and blood tests giving the wrong result. This error might happen even after you've had one positive pregnancy test and test again a couple days later.
1162966
"If you do a pregnancy test before you miss your period, the result may be negative with a urine test but positive with a blood test." Early pregnancy tests aren't usually necessary, but they can make a difference for women at higher risk for miscarriage or ectopic pregnancy.
235992
In very rare cases, you can have a false-positive result. This means you're not pregnant but the test says you are. You could have a false-positive result if you have blood or protein in your pee.
42830
Modern home pregnancy tests (which use a urine sample to detect the presence of human chorionic gonadotropin or hCG, a hormone produced during pregnancy) are fairly reliable. So most of the time, getting a negative result on a pregnancy test means that you are probably not pregnant.
1463211
Getting a false-negative pregnancy test because of the hook effect is rare. False-negative test results can happen for many reasons. One older study that tested 27 different kinds of at-home pregnancy tests found that they gave false negatives almost 48 percent of the time. That's huge!
124581
Could a negative result be wrong? It's possible to get a negative result from a home pregnancy test when you're actually pregnant. This is known as a false-negative.
824148
A third reason for a false negative result on a pregnancy test is diluted urine. If you drink a lot of water, it will dilute the hCG in your urine, and could cause you to get a false negative.
9475
If you take a pregnancy test at night and get a positive result, then you are most likely pregnant. However, if the result is negative, it's possible you might not be pregnant. But you may have also just not had high enough levels of hCG in your urine to be detectable.
639541
As what happened with New_here above, a pregnancy may initially be detected by an early pregnancy test, which will give you a positive result. But then, when you test again at a later time, you get a negative result.
55819
It is very unlikely that a urinary tract infection would cause a false negative pregnancy test. And it is completely safe to use a home pregnancy test with a urinary tract infection. It is, however, theoretically possible that in some cases a UTI might alter the results of a home pregnancy test.
172850
Another common reason for getting a false negative is not having enough hCG in the urine you test. Early on in pregnancy, you can dilute the hormone concentration in your urine if you drink a lot of water before testing. This is more likely to happen in very early pregnancy when you take the test later in the day.
50766
If you're testing before the day of your expected period, you may see a negative result – even if you're pregnant – if: Your test wasn't sensitive enough for early testing. You didn't use the first urine of the day, so concentration of hCG in your urine wasn't high enough.
1106046
It's possible to get a negative result from a home pregnancy test when you're actually pregnant.
573781
One of the most common mistakes is taking the test too early during your cycle. This can cause either a false negative or a false positive. It's also important to use the test when your urine isn't diluted excessively with water.
1325991
False negative pregnancy tests do occur. In fact, it is possible to have a negative result on a pregnancy test and actually be pregnant.
625759
A positive test result is almost certainly correct. However, a negative test result is less reliable. The result may not be reliable if you: don't follow the instructions properly.
1046410
A "Phantom hCG" causes a positive blood pregnancy test without being pregnant. Patients with a phantom hCG will have a persistently yet not significantly rising positive blood pregnancy test while the urine test is negative.