Fatal flaws for an alcohol screening test using a saliva test:
(1) The screening test technician reads a saliva screening test sooner than the time indicated by the manufacturer.
(2) The screening test technician reads a saliva screening after than the time indicated by the manufacturer.
(3) The device for a screening saliva test does not activate.
(4) The device used for a screening saliva test was used after the expiration date for the kit.
Fatal flaws for an alcohol screening test using an ethanol breath test:
(1) There is a discrepancy between the unique sequential test number displayed on the meter and that shown on the instrument printout.
(2) There is a discrepancy between the alcohol concentration displayed on the meter and that shown on the instrument printout.
I am not sure if tampering with the printout of an ethanol breath test would be considered a fatal flaw.
If a fatal flaw occurs then the test must be cancelled and treated as if it never occurred.