No, the control line is there for only one reason - to make sure it worked.
If the control line malfunctioned somehow, then you would not see the control line. If this happens the test is invalid, and it will be repeated.
Even if the test had worked properly, but the control line had malfunctioned it is still called an invalid test and it has to be repeated.
ya im talking about the control line. Im asking can the control line malfunction and read it wrong?
If you didn't get a control line they would pitch the test. You would have been retested.
what do you think the control line is for?
so im guessing it can't? how come?
c'mon now...totally irrational thinking