How many letters does the top answer for “test someone's alcohol level in his blood by means of a breathalyzer” have?

The most common answer is breathalyse (11 letters).

Crossword clue: test someone's alcohol level in his blood by means of a breathalyzer

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

breathalyse 11 letters wn-def

test someone's alcohol level in his blood by means of a breathalyzer

breathalyze 11 letters wn-def

test someone's alcohol level in his blood by means of a breathalyzer