Advice and line eyes

I have tests with faint lines that appear instantly

But got lab work and it’s negative how is it possible

For urine to be positive blood work negative

I know this is a digital it said negative

I googled it

Even if it’s negative u see only one line

As well

Well I see more then one line on this test

I have a video from someone taking a test apart showed one line I just took the digital and the line has color as well

I’m not understanding how lines are appearing on all my tests yet lab is negative