When the second line on a HIV test is faint?

Double lines in the test window mean that the test is positive. A faint double line will also imply that the test is positive. To interpret the self test result themselves, some may find it helpful to call a confidential 1-800 number provided with the kit.

What causes inconclusive HIV test results?

This means that the result is neither positive nor negative. It may be due to a number of factors that have nothing to do with HIV infection, or it may be because testing was done too early in an infection (the “window period”) when there are not enough HIV antibodies present to give a positive result.

Can a faint positive line appeared later?

This usually ranges between a couple of minutes up until 10 minutes later. If you see a positive result beyond this time frame, you may be left second-guessing the results. However, the false-positive reading, in this case, is due to something called an evaporation line.

How do you tell if it’s a faint positive or evaporation line?

A line on a pregnancy test may show a positive result if: There is visible dye in the line, even if the color is faint….Positive test vs. evaporation line

1. More than 10 minutes have passed since taking the test.
2. The mark is faint and colorless, and it resembles a water spot.
3. The mark has no visible dye in it.

What is weak positive?

A weak positive is treated as a “presumptive positive” result — we presume it to be positive, and generally classify it as such, until we have information to suggest otherwise. National testing guidelines for COVID-19 recommend weak positive results be checked by testing the same sample again.

How common are evaporation lines?

Evaporation lines are common on pregnancy tests, but they don’t appear every time. It depends on the chemical makeup of each woman’s urine. One of the best ways to avoid any confusion when using a home pregnancy test is to check your results within the reaction time.

What is C and T in rapid test kit?

[Test principle] STANDARD Q COVID-19 Ag Test has two pre-coated lines, “C” Control line, “T” Test line on the surface of the nitrocellulose membrane. Both the control line and test line in the result window are not visible before applying any specimens.

https://www.youtube.com/watch?v=-A9t4Gy9o_w