Depending on colours of course black is usually negative and the other colour (generally red but depends) is positive. Get a D-cell Battery. Now get two pieces of speaker wire. hold one wire on the positive terminal of the battery and hold the other on the negative side of the battery. touch the wires to the positive and negative posts on the speaker. if the cone moves out ward the positive and negative are correct if it moves inward then the positive and negative are reversed (out of phase.) this simple test will allow you to see which terminal is which. Get a D-cell Battery. Now get two pieces of speaker wire. Hold one wire on the positive terminal of the battery and hold the other on the negative side of the battery. Touch the wires to the positive and negative posts on the speaker. If the cone moves outward the positive and negative are correct if it moves inward then the positive and negative are reversed (out of phase.) this simple test will allow you to see which terminal is which.
Not exactly. "HIV positive" means that someone's test for HIV antibodies came back positive, i.e. that the antibodies are present and that the person has at least been exposed to, and is almost certainly infected with, the virus. AIDS, however, is a syndrome, or condition. There isn't a specific test for it, so the terms "positive" and "negative" have no real meaning. AIDS means that not only is the person infected, but the infection has progressed to the point that they are showing symptoms. You can be "HIV positive" (the test showed antibodies) or "HIV negative" (the test did not show antibodies), but not "AIDS positive" or "AIDS negative". Everyone with AIDS is (or should be, since HIV is the virus that causes AIDS) "HIV positive", but it's possible to be "HIV positive" for a considerable length of time before eventually developing AIDS.
There must be some value otherwise nobody would do them. On that basis, the value must be positive.
Make sure you peed on the strip then redo. if still neither you have a 50-50 shot.
Not necessarily. f(x) = -1-x2 is negative for any test value of x, it is asymptotically negative infinity, but it is NEVER zero.
Negative result. Take the Western Blot to confirm. A non reactive HIV test is a negative HIV test. There is no reason to confirm this with a Western Blot. Western Blots are only used to confirm a positive ELISA.
No , but a negative test can be a false positive .
It is possible to have inconclusive test results, but not to test both positive and negative at the same time.
The ELISA test is usually the first test given; quick results and inexpensive. See the related link.
If it's a pregnancy test the answer is no, A test can come back negative even though its positive. But if it's positive, it's positive 99% of the time.
The Western blot test is used to confirm the results
It would be almost impossible to test negative if a person is HIV positive.
The Western blot test is often used as a confirmatory test after a positive ELISA result for HIV. It is more specific but can also produce false positive results due to its high sensitivity. Consulting a healthcare provider for interpretation of test results and appropriate follow-up is important in HIV testing.
This happened to me when I got pregnant with my third child. The first test was negative and the second positive. From what I understand, a pregnancy test can give a false negative but rarely gives a false positive.
If the Elisa was abnormal/inconclusive, the lab will do a Western blot. If that's positive for antibodies to HIV, it means you've been exposed. if the Western blot is negative, you're in the clear.
Pink- Positive Blue-Negative
It depends on the levels which the test takes. Some tests are high sensitive where others need more hcg to bring up a positive result.