Is test paper of AIDS reliable?

Is test paper of AIDS reliable?
Q: On the net recently, test paper of AIDS is sold very hotly, selling websites declare, " a test paper can let you break away from within 15 minutes panically " . But it is reported, the accuracy that the test paper measures the result is not fully up to expectations, may make testers increase psychological burden or affect adversely treating, and abandon and measure the utensil at will, may infect others. Then, is this kind of AIDS test paper reliable on earth?
A: Test paper of AIDS is generally used when the general survey of the large area is sifted for the first time, is for example used for donating blood or before first aid operation. After the human body is infected with HIV, will contain a large number of antibodies in the blood, these antibodies can have an effect with antigen of HIV fixed on test paper, combine, develop the color marker, make the detection area of the test paper appear in red line. If present two red lines on the test paper, show the blood HIV antibody is positive; It is negative that a red line appears; There is not red line that show that measures and fails.
The accuracy of test paper of AIDS includes two respects, sensitivity and specificity. The higher the sensitivity is, it is " false and negative " to appear Probability low; And the higher the specificity is, " false and positive " Probability low. Different brands, the test paper in different places of production is because of the technological reason, HIV substantially as using has different antigen, achievable accuracy is different too.
So, sift the initial step checked, the testing result that test paper of AIDS reveals as AIDS, exist to a certain degree " False and positive " With " false and negative " Possibility. If the test paper measures the result " Negative " ,But the tester has had dangerous behaviors such as injecting drugs, irregular blood transfusion, many individual character partner, whoring prostitution,etc., can't conclude whether it is safe or not according to this. The same, if the test paper measures the result for " positive " ,The tester needn't be desperate either, it was " false and positive " that probably the test paper revealed ,Oneself has not been actually infected with HIV.
As the ordinary crowd, utilize test paper of AIDS to grasp one's own health, check at ordinary times, it is a method that can be accepted, but does not encourage oneself to operate the test paper at home, and should go to center for disease control or every large hospital,etc. to appoint the organization to check. Especially it is operated, may make accuracy further reduce by oneself under the guidance of the professional personage that the tester is not having. For example, the apt to solidify tester as to blood, need to drip and entering a few drops to dilute liquid in the blood, as diluting the exceeding amount of the liquid, the easy appearance " false and negative " Testing result.
In addition, test paper of AIDS must possess medicines business liscence and medical equipment business liscence as a kind of medicines. If sell the websites of test paper of AIDS, unable to offer this kind of certificate, its test paper that is sold is the counterfeit and shoddy products, complete there is no accuracy at all.
Someone worries about the test paper abandoned and measures the utensil, will make others infect by AIDS, this is a one without scientific basis. Only three is planted for the spread route of AIDS, the blood spreads, mother-to-baby transmission and spreading through sex intercourse. However, the test paper used and detection needle attached are in charge of etc., although will not transmit AIDS, but may transmit other diseases, so should deal carefully with, can't abandon at will.
Zhang Kong will come ' Association's Deputy Chairman of AIDS preventing and controlling of China's venereal disease)
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