Can a beta hcg pregnancy test be wrong?, do these tests go with multiple checks and then they are shown to us?

Question

Human chorionic gonadotrophin (hCG) is a hormone normally produced by the placenta. If you are pregnant, you can detect it in your urine. Blood tests measuring hCG levels can also be used to check how well your pregnancy is progressing, including your baby’s development.
Confirming pregnancy
After you conceive (when the sperm fertilises the egg), the developing placenta begins to produce and release hCG.
It takes about two weeks for your hCG levels to be high enough to be detected in your urine using a home pregnancy test.
A positive home test result is almost certainly correct, but a negative result is less reliable.
If you do a pregnancy test on the first day of your missed period, and it’s negative, wait about a week. If you still think you might be pregnant, do the test again or see your doctor.

Potnuru Srinivaasa Sudhakar · Accepted Answer

Human chorionic gonadotrophin (hCG) is a hormone normally produced by the placenta. If you are pregnant, you can detect it in your urine. Blood tests measuring hCG levels can also be used to check how well your pregnancy is progressing, including your baby’s development.
Confirming pregnancy
After you conceive (when the sperm fertilises the egg), the developing placenta begins to produce and release hCG.
It takes about two weeks for your hCG levels to be high enough to be detected in your urine using a home pregnancy test.
A positive home test result is almost certainly correct, but a negative result is less reliable.
If you do a pregnancy test on the first day of your missed period, and it’s negative, wait about a week. If you still think you might be pregnant, do the test again or see your doctor.

Anju Ahuja · Answer

Beta hcg test is done twice at an interval of 48 hrs and then one can know about conception. Yes, as after two tests we come to know the real status so patients are given the final verdict after the second report comes.

Vandana Walvekar · Answer

Beta hcg done by a good lab is very reliable.