Most pregnancy tests test for the presence of Human Chorionic Gonadotropin (hCG) in the woman's blood or urine. Ectopic pregnancies are usually picked up by home pregnancy tests however it is possible that do to lower levels of hCG that sometimes result from ectopic pregnancies you could get a false negative. Ectopic pregancies can potentially become very dangeros, if you suspect that you may have an ectopic pregnancy even if a home pregnancy test is negative, it would be wise to see a physician.
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YES! Every pregnancy test is different and if the instructions are not followed 100% then there is a chance you could read a false negative. I suggest taking another test and if that dos not give you a conclusive answer or you are still unsure if the test is correct, consult your doctor for a blood test.
The OSOM card pregnancy test uses two bands to detect hCH the hormone of pregnancy, a (C) control band and a (T) test band. The test needs to be read three minutes after dropping urine in the sample well. If the C and T band is colored gray or black the test is positive for pregnancy (hCG is present). If only the C band is obvious the test is negative for detectable levels of hCG. If neither band is obvious the test is invalid, this could be due to age of the card or improper storage.
a faint negative usually means you're not pregnant, but it depends on the test. You'd have to read the full instructions to be sure.
A home pregnancy test can detect the pregnancy hormone starting around 10 days after conception.
The first home pregnancy test was created and marketed in 1978.