Detected when the horse is listed on Lasix today, and no Lasix medication code appears in any of its last 10 race records. Lasix prevents exercise-induced pulmonary hemorrhage (EIPH) — commonly called “bleeding” — and reduces body weight by 20 to 40 pounds of retained fluid. The first-time benefit has been consistently documented in published racing research, with first-time Lasix horses running measurably faster than their pre-Lasix figures would suggest. This is one of the most quantitatively validated edges in North American racing.

Synonyms:
FIRST_TIME_LASIX