I'm asking you, why are you expecting it to work? How would it work? Explain. You always set it LOW in loop() before testing it.
Your code:
loop {
turn LED on
wait 1 sec
turn LED off
wait 1 sec
test the LED and do some stuff
}
Why are you even testing LED? You already know the value because you just finished setting it. Set the LED and the port at the same time.