Is pregnancy test is 100% guarantee?

No: no test is 100% but the home pregnancy tests are 99 plus5 accurate if done correctly

No: A pregnancy test can be falsely positive or falsely negative if the test is not preformed properly or be simply negative if preformed before hcg is high enough to be detected

Very accurate: Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.

Pregnancy test: Usually a positive test is real unless there is a molar pregnancy ( hydadiform mole) a negative urine test may be a false negative and may be confirmed with a serum test