A Mantoux test is done by injecting a very small amount of TB protein ( antigens) under the top layer of skin. The skin test is then read 2 or 3 days later, a positive test, doesn't always mean someone has TB; it just means that you have been exposed to TB at sometime in your life, a follow up XRay or CT scan to reveal if there is an active infection should be done.
A sputum test can also be done to determine if there is active infection.
Then you are probably pregnant.
Depends...
Follow the directions on the test box. If the directions say the reading is positive, yes you can be sure the test is correct.
Say that your friend does it.
False positive
usually about 2 minutes
In French, you can say "bonne chance pour ton test" to wish someone good luck on their test.
Go to the doctor to get a real test.
It can, but you should wait at least 2 weeks for accurate pregnancy test results.
did you mean to say "negative"?
Actually, it is reactive. That means that the patient is preliminarily positive, and a second test should be done for confirmation.
buon pomeriggio